C. 8% D. 10%
答案：C油舱中允许的最大氧气百分比是多少？ 66. What does OBO mean? A. Oil Bulk Oil B. Ore Bulk Oil C. Only Bulk Ore D. Only Basic Oil 答案：B
OBO的意思是什么？矿石/散货油 67. What is the meaning of LEL? A. Low evaporation limit B. Lower exposure limit C. Lower explosive limit D. Low explosion level 答案：C
LEL是什么意思？爆炸下限
68. What kind of fixed extinguishing plant is installed in an oil tankers engine room and pump room? A. Powder plant B. Foam plant C. CO2 plant
D. Water spray plant 答案：C
那种固定灭火装置安装在油轮机舱和泵房？二氧化碳装置 69.Before any portable gas indicators are brought to the measuring spot, what is very important to do with these analysers first? A.To do a full calibration B.Just renew the batteries C .Zero adjust them D.Just check the filters
答案：A任何便携式气体指示器在带到测量地点以前，关于这些分析器什么是最重要的？全面的校正
70. Which one of the following factors does not reduce the effect of free surface?
A. Minimum number of daily service tanks in use B. Where possible, tanks either full or empty C. GZmax at minimum 25° D. Bilges pumped out
答案：C下面那一个因素不能减小自由液面的影响？最大复原力臂 最小在25度
71. Where is the draft largest when the ship has an aft trim? A.Forward B.Aft
C.Midships
D.The drafts are equal all over the ship
答案：B当船舶尾倾时最大吃水在哪里？船尾
72. What percentage of the baggage is required to be checked at Security Level 1? A. 25-50%
B. The percentage is not specified C. 100% D. 5-15%
答案：B行李的百分比为多少时需要选择安全等级？这个百分比没有任何规定
73. Who is responsible for the development of the ship security plan?
A. The company security officer B. The classification society C. The port facility security officer D. The ship security officer
答案：A谁负责开发船舶安全计划？公司安全检查人员 74. Who is responsible for the regular security inspections of the ship?
A. The company security officer B. The classification society
C. The port facility security officer D. The ship security officer
答案：D谁负责船舶常规安全检查？船舶安全检查人员 75. For whom is the ISM Code mandatory? A. All vessels 500 GRT and above B. All tankers
C. All vessels built after 1998 D. All vessels on international routes
答案：A谁要强制执行国际安全管理规则？所有500总吨以上的船舶
76. Who can contact the Designated Person? A. The designated person B. The captain C. All senior officer D. All officers and crew
答案：D谁能联系指定人？所有高级船员和普通船员 77. Who can suggest changes to the SMS? A. The designated person B. The captain C. All officer and crew D. All senior officer
答案：C谁能建议改变短消息？所有高级船员和普通船员
78. How many hours of rest is the minimum required in a normal day?
A. 14 hours B. 10 hours C. 6 hours
D. It doesnot matter as long as my overtime is paid for 答案： B在一个正常日休息的最低要求是多少个小时？10小时
79. The ISM code is pat of _____. A. SOLAS B. STCW C. MARPOL
D. High Speed Craft Code
答案：A国际安全管理规则是SOLAS公约的一部分 80. When are you allowed to throw plastic garbage overboard? A. Being more than 25 miles from shore B. Only at night when it’s dark C. Being more than 6 miles from shore D. Never
答案：D什么时候允许你向船外扔塑料垃圾？什么时候都不行