well, with the effectiveness of services to defend the interests of the masses. Third, we should strive to do well. To achieve good practical results, the key is to know the law, to grasp the laws and using laws. Office of economic development, social progress, there are rules to follow. Only act according to the law, to overcome blindness and strengthening initiative, creative. Working in the Office, we should be good at analyzing the essence of things, to find regular thing, change from passive to active, to seek one. Investee 2. establishment of evaluation system. Evaluation system is essentially an incentive mechanism, the evaluation was objective and fair, reasonable, and can stimulate a person's energy, mobilizing people's enthusiasm or be misleading, dampened the enthusiasm of people. At present, the concept of people-oriented people, but to establish and perfect evaluation system is still lagging behind. Work in this area should be seriously caught up. \ emphasis on\o take advantage of. Is a focus on standards and scientific. A fundamental point of the evaluation criteria, is to keep contact, developmentcomprehensive eye evaluation of cadres. Office work, both \ntial performance\h subjective efforts, take another look at the objective condition; both \h, take another look at the \on participating the breadth of the subject. Evaluation of cadres must give full play to democracy, cadres and the masses handing over evaluation. Office work services leadership and service base, serve the people, then nominated the main object will contain a variety of services, so that assessment was accurate and to avoid one-sidedness. Third, pay attention to the seriousness of the conclusion. The use of evaluation findings is mainly embodied in his direction. Permitted to choose one, it would be tantamount to establishing a banner. Evaluation can't take care of the balance, otherwise it would undermine the offset the positive significance of evaluation. Office of the party committees at all levels should take the findings as on the cadres ' bonus-penalty, an important basis for future movements, incentive and restraint effect of making evaluations. 3. Prevention ofunderstanding \d development, concrete is dialectical,. In practice in the process, to prevent one-sided and still look, from actual people. One is to use dialectical point of view to understand. Humanist is the core of the scientific Outlook on development, remains the development of the scientific Outlook on development emphasizes, is still taking economic construction as the Center. Any departure from the development of thought and action, is a misinterpretation and misunderstanding of people-oriented. Adhere to people-oriented both to overcome one-sidedness of the old, but also to prevent one-sidedness, not accelerating the development of people and the opposition. Must be very clear, people oriented and speeding up development is not opposed, but consistent, we should never be实验理论笔试试卷
2013年8月17日，14:30-17:00
选手编号：_____________
题号 满分 得分 评卷教师签名 复核教师签名 一 3.5 二 6.5 三 90 四 31 五 9 六 15 总分 155
一、实验室安全选择题（每个小题只有1个正确选项，请选手将答案填入以下表格中；每
个正确选项0.5分，共3.5分）
小题号 1 2 3 4
1、化学品对生物的作用结果是（ ）。
A、没有危害 B、有一定危害 C、有很大危害 D、剂量决定一切 2、关于危险化学品安全标签，正确的做法是（ D ）。
A、化学品安全标签由使用单位从市场上购置。 B、化学品安全标签附在产品说明书中。
C、化学品安全标签必须牢固地粘贴或者栓挂于包装件的内部和包装件外。
D、化学品安全标签必须牢固地粘贴或者栓挂于包装件的内部和包装件外，且其内容必须与包装内的危险化学品完全一致。
3、化学品收货检验时应做的工作不包括（ A ）。
A、对化学品性质进行安全测试
B、收货时，化学品仓库职员应负责核对化学品的品名、规格、等级、厂牌、数量等是否符合国家有关标准。
C、查验化学品的安全数据表(MSDS)及粘贴危害标志(物质安全数据表及危害标志可要求厂商提供)。 D、检验化学品的安全性(容器是否完整、无破损)及标示。
4、易燃物料与液体的存放必须（ B ）。
A、与其他化学品一齐存放 B、储放在危险品仓库内 C、放在化学实验室中方便取用的角落 D、储放在单独的仓库内
5、根据化学品的危险程度和类别，用“危险”、“警告”、“（ A ）”三个词分别进行危害程度的
eople-oriented in the name of reducing our enthusiasm. Premier Wen Jiabao's Government work report this year, identified as 7% growth, 2.1% lower than last year's 9.1%, but in 8 work remains to accelerate development in the first place ... Work standards. Second is to use the scale of development to understand. Society is evolving, human needs are also changing. Practice of humanism is a long-term process and cannot be achieved overnight. To treat people if you stand still and rigid dogma, it is possible to return to this, see things but not people's old ways. Therefore, we have to follow the development of the times, and continue debugging the humanist perspective, innovative people-oriented way. Under the new historical conditions, we are requested by the times, set up a brand new concept, a high starting point, high standard of armed people, shaping, exercise, people, constantly taking the new connotation of the times. Terms of Office, is to lead the vast numbers of cadres to actively adapt to the knowledge faster and actively adapt to the increasingly high level of leadership situation, actively adapt to the demand of the masses more and more situations, eager to learn, enhance accumulation, efforts, honed the ability to overcome a good service, panic. Third is to use realistic understanding. Adhere to people-oriented must be based on reality, not divorced from reality. Desk no water cups here in Hong Kong, staff need to drink some water to the drinking fountain on a floor, the glass used is a one-time non-cone type. Drink this cup can only hold, cannot be put down. This is not only to save on glass materials, more important is to force you to get drinking water, go back to your seat business. Our emphasis on people-oriented, does not imply you can indulge the desires, the comfortable, the pursuit of enjoyment. Office of the party committees at all levels of our comrades, must continue to maintain the style of plain living and hard struggle, to stand up to the tests of temptations, exciting \on \sposition\spirit of selfless dedication and provide services. Investee 4. clearly defined responsibilities. Putting people first is a common vision of development, everyone is a liability. People-oriented, above and below with the responsibility for coordinating system must be established and hold everyone accountable. First, we must strengthen the leadership. \ce, its governance, its level, bear the responsibility of the Division.\s the minimum requirement for leaders, is a measure of the basic criteria for whether a leading cadre is competent. Leaders need to \official term for the benefit of\consciously assume responsibility for implementing people-oriented. Director of the Office of the party committees at all levels is the responsibility of the units to implement people-oriented, to manage their people, %ug in own responsibility\ducation of leading cadres, cadres and cadres work, efforts to revitalize the Office of human resources, Office work is full of vigor and vitality 答案 B 小题号 5 6 7 答案 well, with the effectiveness of services to defend the interests of the masses. Third, we should strive to do well. To achiev good practical results, the key is to know the law, to grasp the laws and using laws. Office of economic development, social progress, there are rules to follow. Only act according to the law, to overcome blindness and strengthening initiative, creative. Working in the Office, we should be good at analyzing the essence of things, to find regular thing, change from passive to active, to seek one. Investee 2. establishment of evaluation system. Evaluation system is essentially an incentive mechanism, the evaluation was objective and fair, reasonable, and can stimulate a person's energy, mobilizing people's enthusiasm or be misleading, dampened the enthusiasm of people. At present, the concept of people-oriented people, but to establish and perfect evaluation system is still lagging behind. Work in this area should be seriously caught up. \ emphasis on\o take advantage of. Is a focus on standards and scientific. A fundamental point of the evaluation criteria, is to keep contact, developmentcomprehensive eye evaluation of cadres. Office work, both \ntial performance\h subjective efforts, take another look at the objective condition; both \h, take another look at the \d, focus on participating the breadth of the subject. Evaluation of cadres must give full play to democracy, cadres and the masses handing over evaluation. Office work services leadership and service base, serve the people, then nominated the main object will contain a variety of services, so that assessment was accurate and to avoid one-sidedness. Third, pay attention to the seriousness of the conclusion. The use of evaluation findings is mainly embodied in his direction. Permitted to choose one, it would be tantamount to establishing a banner. Evaluation can't take care of the balance, otherwise it would undermine the offset the positive significance of evaluation. Office of the party committees at all levels should take the findings as on the cadres ' bonus-penalty, an important basis for future movements, incentive and restraint effect of making evaluations. 3. Prevention ofunderstanding \d development, concrete is dialectical,. In practice in the process, to prevent one-sided and still look, from actual people. One is to use dialectical point of view to understand. Humanist is the core of the scientific Outlook on development, remains the development of the scientific Outlook on development emphasizes, is still taking economic construction as the Center. Any departure from the development of thought and action, is a misinterpretation and misunderstanding of people-oriented. Adhere to people-oriented both to overcome one-sidedness of the old, but also to prevent one-sidedness, not accelerating the development of people and the opposition. Must be very clear, people oriented and speeding up development is not opposed, but consistent, we should never be警示。
A、小心 B、当心 C、注意 D、谨慎 6、查事故隐患就是要查安全管理漏洞、人的不安全行为和（ B ）。
A、人的不安全思想 B、物的不安全状态 C、所有人员工作的配合情况 D、安全培训是否进行
7、呼吸系统防护主要是防止有毒气体、蒸气、尘、烟、雾等有害物质经呼吸器官进入人体内，从而对人体造成损害。在尘土污染、事故处理、抢救、检修、剧毒操作以及在狭小仓库内作业时，必须选用（ ）呼吸器官保护用具。
A、可靠的 B、适当的 C、可用的 D、耐用的 1、 实验室安全问答题（共6.5分）
1、（1.5分）请列出火灾情况下，不能用水灭火的6种物质。
有下列爆炸形式的：碱金属 金属有机化合物（如n-丁基锂） 许多氢化物（如氢化铝锂） 许多氨基化合物（如氨基钠） 极易挥发的油（如脂肪或油爆炸）
无效用和具有使火灾扩大的危险：与水不能互溶的所有溶剂（如甲苯、醚、汽油） 在水面上漂浮而继续燃烧的溶剂
2、（3.5分）当乙醚大量地洒落在地面上时，则将面临哪些特殊危害（如火灾，爆炸，中毒或腐蚀）？有危害健康作用时人的身体的哪些部位特别易受到伤害？如何清除这些物质？（列出必要的自我防护措施）。
乙醚蒸汽具有极高的火灾和爆炸危险。 此外该蒸汽还具有麻醉作用。
紧急措施：清除所有火源。阻止形成爆炸危险的形成，如打开窗户。
自我防护措施：清除乙醚时，必须佩戴防毒面具和手套。若室内空气有爆炸能力，必须躲避，不得再进入。快速处理也是重要的。
3、（1.5分）某学生在一次实验中，大量的苯胺喷溅出来。该学生确认，自己已受到喷溅物的污染，但幸运的是，他的眼睛未受到伤害，因为他正确地佩戴了防护眼镜。该学生或指导教师必须做什么？
eople-oriented in the name of reducing our enthusiasm. Premier Wen Jiabao's Government work report this year, identified as 7% growth, 2.1% lower than last year's 9.1%, but in 8 work remains to accelerate development in the first place ... Work standards. Second is to use the scale of development to understand. Society is evolving, human needs are also changing. Practice of humanism is a long-term process and cannot be achieved overnight. To treat people if you stand still and rigid dogma, it is possible to return to this, see things but not people's old ways. Therefore, we have to follow the development of the times, and continue debugging the humanist perspective, innovative people-oriented way. Under the new historical conditions, we are requested by the times, set up a brand new concept, a high starting point, high standard of armed people, shaping, exercise, people, constantly taking the new connotation of the times. erms of Office, is to lead the vast numbers of cadres to actively adapt to the knowledge faster and actively adapt to the increasingly high level of leadership situation, actively adapt to the demand
of the masses more and more situations, eager to learn, enhance accumulation, efforts, honed the ability to overcome a good service, panic. Third is to use realistic understanding. Adhere to people-oriented must be based on reality, not divorced from reality. Desk no water cups here in Hong Kong, staff need to drink some water to the drinking fountain on a floor, the glass used is a one-time non-cone type. Drink this cup can only hold, cannot be put down. This is not only to save on glass materials, more important is to force you to get drinking water, go back to your seat business. Our emphasis on people-oriented, does not imply you can indulge the desires, the comfortable, the pursuit of enjoyment. Office of the party committees at all levels of our comrades, must continue to maintain the style of plain living and hard struggle, to stand up to the tests of temptations, exciting \sposition\spirit of selfless dedication and provide services. Investee 4. clearly defined responsibilities. Putting people first is a common vision of development, everyone is a liability. People-oriented, above and below with the responsibility for coordinating system must be established and hold everyone accountable. First, we must strengthen the leadership. \ce, its governance, its level, bear the responsibility of the Division.\s the minimum requirement for leaders, is a measure of the basic criteria for whether a leading cadre is competent. Leaders need to \official term for the benefit of\consciously assume responsibility for implementing people-oriented. Director of the Office of the party committees at all levels is the responsibility of the units to implement people-oriented, to manage their people, %ug in own responsibility\ducation of leading cadres, cadres and cadres work, efforts to revitalize the Office of human resources, Office work is full of vigor and vitality2
well, with the effectiveness of services to defend the interests of the masses. Third, we should strive to do well. To achieve good practical results, the key is to know the law, to grasp the laws and using laws. Office of economic development, social progress, there are rules to follow. Only act according to the law, to overcome blindness and strengthening initiative, creative. Working in the Office, we should be good at analyzing the essence of things, to find regular thing, change from passive to active, to seek one. Investee 2. establishment of evaluation system. Evaluation system is essentially an incentive mechanism, the evaluation was objective and fair, reasonable, and can stimulate a person's energy, mobilizing people's enthusiasm or be misleading, dampened the enthusiasm of people. At present, the concept of people-oriented people, but to establish and perfect evaluation system is still lagging behind. Work in this area should be seriously caught up. \ee emphasis on\of. Is a focus on standards and scientific. A fundamental point of the evaluation criteria, is to keep contact, development, comprehensive eye evaluation of cadres. Office work, both \nd \both subjective efforts, take another look at the objective condition; both \nother look at the \on participating the breadth of the subject. Evaluation of cadres must give full play to democracy, cadres and the masses handing over evaluation. Office work services leadership and service base, serve the people, then nominated the main object will contain a variety of services, so that assessment was accurate and to avoid one-sidedness. Third, pay attention to the seriousness of the conclusion. The use of evaluation findings is mainly embodied in his direction. Permitted to choose one, it would be tantamount to establishing a banner. Evaluation can't take care of the balance, otherwise it would undermine the offset the positive significance of evaluation. Office of the party committees at all levels should take the findings as on the cadres ' bonus-penalty, an important basis for future movements, incentive and restraint effect of making evaluations. 3. Prevention of understanding \d development, concrete is dialectical,. In practice in the process, to prevent one-sided and still look, from actual people. One is to use dialectical point of view to understand. Humanist is the core of the scientific Outlook on development, remains the development of the scientific Outlook on development emphasizes, is still taking economic construction as the Center. Any departure from the development of thought and action, is a misinterpretation and misunderstanding of people-oriented. Adhere to people-oriented both to overcome one-sidedness of the old, but also to prevent one-sidedness, not accelerating the development of people and the opposition. Must be very clear, people oriented and speeding up development is not opposed, but consistent, we should never be第一届广东省大学生化学实验竞
赛
立即脱去沾污的全部衣服。
冲洗，最好用肥皂水擦洗受污染的皮肤（至少10分钟）。
送往医院（苯胺通过皮肤可大量吸收。在假定非紧急情况下，也可请急救医生来。若对事件的程度无法确定，至少也应该向所在单位医生咨询。）
三、单项选择题（每个小题只有1个正确选项，请选手将答案填入以下表格中；每个正确
选项1分，共90分）
小题号 1-5 16-20 31-35 46-50 61-65 76-80 答案 小题号 6-10 21-25 36-40 51-55 66-70 81-85 答案 小题号 11-15 26-30 41-45 56-60 71-75 86-90 答案
1、通过试剂瓶上的标签颜色可判断商品化试剂的规格。红色标签对应试剂的级别为（ ）。 A、工业级 A、胆矾 A、 2种 A、移液管
B、化学纯 B、粗盐 B、 3种 B、容量瓶
C、分析纯 C、氯化钠 C、 4种 C、量筒
D、优级纯 D、硫酸铵 D、 5种 D、烧杯
2、化学实验中所用的水一般是指“蒸馏水”。溶解下列物质时，可以用自来水的是（ ）。
3、在烧杯、试管、锥形瓶、表面皿、蒸发皿与坩埚等6种实验仪器中，可以直接火加热的有（ ）。 4、下列玻璃仪器在用蒸馏水洗净后，必须用待装溶液润洗的是（ ）。 5、下列玻璃仪器中，可以放在烘箱中烘干的是（ ）。
A、.移液管
B、容量瓶
C、量筒
D、烧杯
6、用pH试纸测定某溶液的pH时，规范的操作是（ ）。
A、将待测溶液倒在pH试纸上，立即跟标准比色卡比较
B、将pH试纸浸入待测溶液中，取出后半分钟内跟标准比色卡比较
C、用干燥洁净的玻璃棒蘸取待测溶液，滴在pH试纸上，立即跟标准比色卡比较
D、将pH试纸剪成小块，放在干燥清洁的表面皿上，用干净的玻璃棒蘸取待测溶液滴在试纸上，半分钟内跟标准比色卡比较
7、下列有关煤气灯的说法中，错误的是（ ）。
eople-oriented in the name of reducing our enthusiasm. Premier Wen Jiabao's Government work report this year, identified as 7% growth, 2.1% lower than last year's 9.1%, but in 8 work remains to accelerate development in the first place ... Work standards. Second is to use the scale of development to understand. Society is evolving, human needs are also changing. Practice of humanism is a long-term process and cannot be achieved overnight. To treat people if you stand still and rigid dogma, it is possible to return to this, see things but not people's old ways. Therefore, we have to follow the development of the times, and continue debugging the humanist perspective, innovative people-oriented way. Under the new historical conditions, we are requested by the times, set up a brand new concept, a high starting point, high standard of armed people, shaping, exercise, people, constantly taking the new connotation of the times. erms of Office, is to lead the vast numbers of cadres to actively adapt to the knowledge faster and actively adapt to the increasingly high level of leadership situation, actively adapt to the demand of the masses more and more situations, eager to learn, enhance accumulation, efforts, honed the ability to overcome a good service, panic. Third is to use realistic understanding. Adhere to people-oriented must be based on reality, not divorced from reality. Desk no water cups here in Hong Kong, staff need to drink some water to the drinking fountain on a floor, the glass used is a one-time non-cone type. Drink this cup can only hold, cannot be put down. This is not only to save on glass materials, more important is to force you to get drinking water, go back to your seat business. Our emphasis on people-oriented, does not imply you can indulge the desires, the comfortable, the pursuit of enjoyment. Office of the party committees at all levels of our comrades, must continue to maintain the style of plain living and hard struggle, to stand up to the tests of temptations, exciting \sposition\spirit of selfless dedication and provide services. Investee 4. clearly defined responsibilities. Putting people first is a common vision of development, everyone is a liability. People-oriented, above and below with the responsibility for coordinating system must be established and hold everyone accountable. First, we must strengthen the leadership. \ce, its governance, its level, bear the responsibility of the Division.\s the minimum requirement for leaders, is a measure of the basic criteria for whether a leading cadre is competent. Leaders need to \official term for the benefit of\consciously assume responsibility for implementing people-oriented. Director of the Office of the party committees at all levels is the responsibility of the units to implement people-oriented, to manage their people, %ug in own responsibility\ducation of leading cadres, cadres and cadres work, efforts to revitalize the Office of human resources, Office work is full of vigor and vitality第3页 共15页
well, with the effectiveness of services to defend the interests of the masses. Third, we should strive to do well. To achiev good practical results, the key is to know the law, to grasp the laws and using laws. Office of economic development, social progress, there are rules to follow. Only act according to the law, to overcome blindness and strengthening initiative, creative. Working in the Office, we should be good at analyzing the essence of things, to find regular thing, change from passive to active, to seek one. Investee 2. establishment of evaluation system. Evaluation system is essentially an incentive mechanism, the evaluation was objective and fair, reasonable, and can stimulate a person's energy, mobilizing people's enthusiasm or be misleading, dampened the enthusiasm of people. At present, the concept of people-oriented people, but to establish and perfect evaluation system is still lagging behind. Work in this area should be seriously caught up. \ emphasis on\o take advantage of. Is a focus on standards and scientific. A fundamental point of the evaluation criteria, is to keep contact, developmentcomprehensive eye evaluation of cadres. Office work, both \ntial performance\h subjective efforts, take another look at the objective condition; both \h, take another look at the \d, focus on participating the breadth of the subject. Evaluation of cadres must give full play to democracy, cadres and the masses handing over evaluation. Office work services leadership and service base, serve the people, then nominated the main object will contain a variety of services, so that assessment was accurate and to avoid one-sidedness. Third, pay attention to the seriousness of the conclusion. The use of evaluation findings is mainly embodied in his direction. Permitted to choose one, it would be tantamount to establishing a banner. Evaluation can't take care of the balance, otherwise it would undermine the offset the positive significance of evaluation. Office of the party committees at all levels should take the findings as on the cadres ' bonus-penalty, an important basis for future movements, incentive and restraint effect of making evaluations. 3. Prevention ofunderstanding \d development, concrete is dialectical,. In practice in the process, to prevent one-sided and still look, from actual people. One is to use dialectical point of view to understand. Humanist is the core of the scientific Outlook on development, remains the development of the scientific Outlook on development emphasizes, is still taking economic construction as the Center. Any departure from the development of thought and action, is a misinterpretation and misunderstanding of people-oriented. Adhere to people-oriented both to overcome one-sidedness of the old, but also to prevent one-sidedness, not accelerating the development of people and the opposition. Must be very clear, people oriented and speeding up development is not opposed, but consistent, we should never beA、煤气量小、空气量大时会产生侵入火焰 C、点煤气灯时，先开针形阀，再划火柴 A、氯化铵
B、氯化钠 B、盐效应
B、煤气和空气量都太大时会产生临空火焰
D、使用煤气灯时，一般用外层氧化焰加热
C、硫酸铜 C、碱效应
D、硫酸亚铁铵 D、络合效应
8、下列物质的溶液中，可用煤气灯直接加热蒸发浓缩来制备相应化合物的是（ ）。
9、用NaOH沉淀Fe3+时，NaOH要适当过量以使Fe3+ 沉淀完全。这一操作利用的原理是（ ）。
A、同离子效应 A、加热方式
10、蒸发浓缩时，浓缩程度取决于许多因素。下列因素中，与浓缩程度无关的是（ ）。
B、杂质的溶解度大小 D、溶液中杂质含量的多少
C、溶质的溶解度随温度变化的情况
11、下面有几种关于“2/3”的说法：①用量筒量取液体时，液体体积不能超过其容量的2/3；②水浴加
热蒸发浓缩时，大烧杯中所盛的水不能超过其容量的2/3；③用容量瓶配溶液时，需要在加水至其容积约2/3时进行预混合；④减压过滤时，加入的溶液不能超过漏斗容积的2/3；⑤蒸发浓缩时，蒸发皿内所盛溶液的体积一般不能超过其容量的2/3。其中正确的说法有（ ）。 A、 2种
B、 3种
C、 4种
D、 5种
12、下列有关量筒的洗涤或使用方法中，符合规范的是（ ）。
A、用试管刷刷洗量筒内壁的污垢
B、量筒不能用来量取热的溶液
D、读数时，把量筒放在台面上以使液面水平
C、量取溶液时，用滴管调节液面至刻度 13、下列叙述中，完全正确的是（ ）。
A、用电子秤称量氢氧化钠固体时，用滤纸来盛放药品 B、抽滤结束后，滤液要从抽滤瓶的支口倒出
C、“滴加”操作是指每加入一滴试剂都要振荡试管、观察现象后再加入下一滴试剂 D、量取一定体积浓盐酸注入容量瓶中，加蒸馏水至刻度线，即得一定浓度的盐酸 14、根据下列分离实验中的现象，能确定发生“透滤”的是（ ）。
A、用常压过滤法分离氢氧化铁胶状沉淀时，滤液无色
B、用减压过滤法分离氢氧化铁胶状沉淀时，滤液呈浅黄色且略显浑浊 C、用减压过滤法分离硫酸铜时，加酒精洗涤后，滤液中有蓝色晶体析出 D、“氯化铵制备”实验中，用减压过滤法分离氯化铵时，滤液中有白色晶体
15、某些物质从溶液中结晶时，即使溶液过饱和也难以析出。无助于消除“过饱和”现象的措施是（ ）。
A、加热
B、搅拌 B、搅拌
C、加入晶种
D、摩擦容器内壁 D、摩擦容器内壁
16、溶液中析出晶体的大小与晶核数目有关。不能增加晶核数目的措施是（ ）。
A、缓慢冷却
C、增加过饱和度 B、沉淀前煮沸溶液 D、慢慢加入沉淀剂
17、用NaOH溶液沉淀Fe3+时，有利于获得胶状沉淀的措施是（ ）。
A、快速加沉淀剂 C、增加溶液浓度
18、下列有关“氯化铵制备”实验的说法中，正确的是（ ）。
A、“加热法”中，溶解原料所需水量取决于NaCl在100?C下的溶解度 B、“加热法”中，将分离Na2SO4后的滤液冷却至室温，抽滤即得纯净的NH4Cl C、“冰冷法”中，溶解原料所需水量取决于NaCl在0~10?C下的溶解度
D、“冰冷法”中，将分离Na2SO4?10H2O后的滤液水浴加热，蒸干即得纯净的NH4Cl 19、下列有关电导率仪使用的说法中，完全正确的是（ ）。
eople-oriented in the name of reducing our enthusiasm. Premier Wen Jiabao's Government work report this year, identified as 7% growth, 2.1% lower than last year's 9.1%, but in 8 work remains to accelerate development in the first place ... Work standards. Second is to use the scale of development to understand. Society is evolving, human needs are also changing. Practice of humanism is a long-term process and cannot be achieved overnight. To treat people if you stand still and rigid dogma, it is possible to return to this, see things but not people's old ways. Therefore, we have to follow the development of the times, and continue debugging the humanist perspective, innovative people-oriented way. Under the new historical conditions, we are requested by the times, set up a brand new concept, a high starting point, high standard of armed people, shaping, exercise, people, constantly taking the new connotation of the times. erms of Office, is to lead the vast numbers of cadres to actively adapt to the knowledge faster and actively adapt to the increasingly high level of leadership situation, actively adapt to the demand
of the masses more and more situations, eager to learn, enhance accumulation, efforts, honed the ability to overcome a good service, panic. Third is to use realistic understanding. Adhere to people-oriented must be based on reality, not divorced from reality. Desk no water cups here in Hong Kong, staff need to drink some water to the drinking fountain on a floor, the glass used is a one-time non-cone type. Drink this cup can only hold, cannot be put down. This is not only to save on glass materials, more important is to force you to get drinking water, go back to your seat business. Our emphasis on people-oriented, does not imply you can indulge the desires, the comfortable, the pursuit of enjoyment. Office of the party committees at all levels of our comrades, must continue to maintain the style of plain living and hard struggle, to stand up to the tests of temptations, exciting \sposition\spirit of selfless dedication and provide services. Investee 4. clearly defined responsibilities. Putting people first is a common vision of development, everyone is a liability. People-oriented, above and below with the responsibility for coordinating system must be established and hold everyone accountable. First, we must strengthen the leadership. \ce, its governance, its level, bear the responsibility of the Division.\s the minimum requirement for leaders, is a measure of the basic criteria for whether a leading cadre is competent. Leaders need to \official term for the benefit of\consciously assume responsibility for implementing people-oriented. Director of the Office of the party committees at all levels is the responsibility of the units to implement people-oriented, to manage their people, %ug in own responsibility\ducation of leading cadres, cadres and cadres work, efforts to revitalize the Office of human resources, Office work is full of vigor and vitality4
well, with the effectiveness of services to defend the interests of the masses. Third, we should strive to do well. To achieve good practical results, the key is to know the law, to grasp the laws and using laws. Office of economic development, social progress, there are rules to follow. Only act according to the law, to overcome blindness and strengthening initiative, creative. Working in the Office, we should be good at analyzing the essence of things, to find regular thing, change from passive to active, to seek one. Investee 2. establishment of evaluation system. Evaluation system is essentially an incentive mechanism, the evaluation was objective and fair, reasonable, and can stimulate a person's energy, mobilizing people's enthusiasm or be misleading, dampened the enthusiasm of people. At present, the concept of people-oriented people, but to establish and perfect evaluation system is still lagging behind. Work in this area should be seriously caught up. \ee emphasis on\of. Is a focus on standards and scientific. A fundamental point of the evaluation criteria, is to keep contact, development, comprehensive eye evaluation of cadres. Office work, both \nd \both subjective efforts, take another look at the objective condition; both \nother look at the \on participating the breadth of the subject. Evaluation of cadres must give full play to democracy, cadres and the masses handing over evaluation. Office work services leadership and service base, serve the people, then nominated the main object will contain a variety of services, so that assessment was accurate and to avoid one-sidedness. Third, pay attention to the seriousness of the conclusion. The use of evaluation findings is mainly embodied in his direction. Permitted to choose one, it would be tantamount to establishing a banner. Evaluation can't take care of the balance, otherwise it would undermine the offset the positive significance of evaluation. Office of the party committees at all levels should take the findings as on the cadres ' bonus-penalty, an important basis for future movements, incentive and restraint effect of making evaluations. 3. Prevention of understanding \d development, concrete is dialectical,. In practice in the process, to prevent one-sided and still look, from actual people. One is to use dialectical point of view to understand. Humanist is the core of the scientific Outlook on development, remains the development of the scientific Outlook on development emphasizes, is still taking economic construction as the Center. Any departure from the development of thought and action, is a misinterpretation and misunderstanding of people-oriented. Adhere to people-oriented both to overcome one-sidedness of the old, but also to prevent one-sidedness, not accelerating the development of people and the opposition. Must be very clear, people oriented and speeding up development is not opposed, but consistent, we should never be第一届广东省大学生化学实验竞
赛
A、校准时，将电极插在标准缓冲溶液中 B、先进行温度补偿，再进行电极常数补偿 C、校准就是进行温度补偿和电极常数补偿 D、若未补偿温度，测得的是溶液温度下的电导率
20、在“电导率法测定醋酸电离常数”实验中，进行了温度补偿，实验时室温为296 K，查手册只有273、291、298和303 K下醋酸的极限摩尔电导率?0。计算电离常数时，?0的取值方法是（ ）。
A、 303 K下的?0值 B、 298 K下的?0值 C、 291 K与298 K下?0的平均值 D、将四个温度与对应的?0作图，由图找出296 K下的?0值
21、用酸度计测定溶液的pH之前，必须进行“标定”。定位液应选用（ ）。
A、蒸馏水
B、一定pH的盐酸
D、与待测溶液pH接近的标准缓冲溶液
C、一定pH的KNO3溶液
22、某无色溶液可能含Na2CO3、MgCl2、NaHCO3、BaCl2中的一种或几种。向该溶液中加入NaOH溶液生成白色沉淀；往原溶液中加入稀硫酸时，有白色沉淀和气体生成。则下列判断正确的是（ ）。
A、一定有Na2CO3 C、一定有BaCl2
选项 X Y
B、一定有MgCl2 D、一定没有NaHCO3
C Na2SO3溶液 D Na2S溶液 醋酸铅溶液 23、为检验下列各试剂X在存放过程中是否部分氧化而发生变质，所选用的试剂Y正确的是（ ）。
A KI溶液 氯水 B FeCl2溶液 酸化过的KSCN溶液 BaCl2溶液 24、在物理量测量过程中，合理的洗涤可以减小测量误差。下列过程中的洗涤不必要的是（ ）。
A、用分光光度计测量某有色溶液的吸光度前，用待测溶液润洗比色皿3次 B、用电导率仪测量醋酸的电导率前，用待测溶液冲洗电极3次 C、用酸度计测量醋酸的pH前，用待测溶液冲洗电极3次
D、用酸度计监控硝酸铜与磺基水杨酸混合溶液的pH前，用该混合溶液冲洗电极3次
25、某同学在处理“磺基水杨酸铜组成与稳定常数测定”实验的数据时，发现2号溶液的吸光度偏高。
在配制该溶液时，引起这一偏差的可能因素有（ ）。 A、硝酸铜溶液体积偏大
B、磺基水杨酸溶液体积偏大 D、用硝酸钾溶液定容时超过标线 B、溶液配制会带来一定误差 D、两种方法的测量原理不同
C、往容量瓶转移溶液时未润洗电极与烧杯 A、两者不是同时测量的
26、“电导率法”与“pH法”测量醋酸电离常数的结果往往不同，其可能原因是（ ）。
C、测量时所用溶液的体积不同
27、下列数据处理符合有效数字运算规则的是（ ）。
A、“胆矾”实验中，以20.0 g胆矾为原料制得13.0 g粗产品，则该步实验的回收率为65% B、“硫酸亚铁铵”实验中，比色分析确定产品为一级，则产品中Fe3+的质量分数不超过0.005% C、用酸度计测得某醋酸溶液的pH为3.00，则该溶液中H+的浓度为 1.00×10-3 mol/L D、取25.00 mL 0.2000 mol/L醋酸于50 mL容量瓶中定容，所得溶液浓度为0.10 mol/L 28、下列离子中，能在pH ? 1的酸性溶液中大量存在的是（ ）。
A、VO3-
B、F-
C、TiO2+
D、MnO42-
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eople-oriented in the name of reducing our enthusiasm. Premier Wen Jiabao's Government work report this year, identified as 7% growth, 2.1% lower than last year's 9.1%, but in 8 work remains to accelerate development in the first place ... Work standards. Second is to use the scale of development to understand. Society is evolving, human needs are also changing. Practice of humanism is a long-term process and cannot be achieved overnight. To treat people if you stand still and rigid dogma, it is possible to return to this, see things but not people's old ways. Therefore, we have to follow the development of the times, and continue debugging the humanist perspective, innovative people-oriented way. Under the new historical conditions, we are requested by the times, set up a brand new concept, a high starting point, high standard of armed people, shaping, exercise, people, constantly taking the new connotation of the times. erms of Office, is to lead the vast numbers of cadres to actively adapt to the knowledge faster and actively adapt to the increasingly high level of leadership situation, actively adapt to the demand of the masses more and more situations, eager to learn, enhance accumulation, efforts, honed the ability to overcome a good service, panic. Third is to use realistic understanding. Adhere to people-oriented must be based on reality, not divorced from reality. Desk no water cups here in Hong Kong, staff need to drink some water to the drinking fountain on a floor, the glass used is a one-time non-cone type. Drink this cup can only hold, cannot be put down. This is not only to save on glass materials, more important is to force you to get drinking water, go back to your seat business. Our emphasis on people-oriented, does not imply you can indulge the desires, the comfortable, the pursuit of enjoyment. Office of the party committees at all levels of our comrades, must continue to maintain the style of plain living and hard struggle, to stand up to the tests of temptations, exciting \sposition\spirit of selfless dedication and provide services. Investee 4. clearly defined responsibilities. Putting people first is a common vision of development, everyone is a liability. People-oriented, above and below with the responsibility for coordinating system must be established and hold everyone accountable. First, we must strengthen the leadership. \ce, its governance, its level, bear the responsibility of the Division.\s the minimum requirement for leaders, is a measure of the basic criteria for whether a leading cadre is competent. Leaders need to \official term for the benefit of\consciously assume responsibility for implementing people-oriented. Director of the Office of the party committees at all levels is the responsibility of the units to implement people-oriented, to manage their people, %ug in own responsibility\ducation of leading cadres, cadres and cadres work, efforts to revitalize the Office of human resources, Office work is full of vigor and vitality