______.
A. at least annually B. whenever it is below its required weight
C. only if the extinguisher has been used D. before every safety inspection
KEY: B二氧化碳灭火器一般重量减少百分之十必须从新填装。
[81] A cardinal mark showing an uninterrupted quick-flashing white light indicates the deepest water in the area is on the ______.
A. north side of the mark B. west side of the mark
C. east side of the mark D. south side of the mark
KEY: A当方位标显示不间断的快闪白灯，表示该区域的最深处在标志的北面。 [82]同上
[83] A cargo hose is marked with the ______.
A. maximum working pressure B. bursting pressure
C. safety relief valve setting D. maximum temperature
KEY: A输油软管被最大工作压力标记。
[84] A cargo that has a stowage factor over 40 is know as a ______.
A. hygroscopic cargo B. measurement cargo
C. stowage cargo D. weight cargo
KEY: B基载因数超过40的货物被最为容积货。 [85] A carling is used aboard ship ______.
A. as a connecting strap between the butted ends of plating B. to stiffen areas under points of great stress between beams C. to prevent the anchor from fouling when the brake is
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released
D. to provide an extra heavy fitting in a heavy lift cargo rig KEY: B短纵梁在船上用作加强横梁之间的大压力区域。 [86] A celestial body will cross the prime vertical circle when the latitude is numerically ______.
A. greater than the declination and both are of the same name B. less than the declination and both are of the same name C. greater than the declination and both are of contrary name D. less than the declination and both are of contrary name KEY: A一天体将穿过东西圈，当维度在数字上大于赤纬并且纬度和赤纬同名。
[87] A certificated lifeboatman assigned to command the lifeboat must ______.
A. be the first individual to board the craft
B. drain the hydraulic pressure before lowering the craft C. have a list of the persons assigned to the liftboat D. all of the above
KEY: C合格的救生艇艇长应持有该艇船员名单。 [88]同上
[89] A chain bridle is used when towing astern because it ______.
A. is easy to connect
B. provides an effective catenary and absorbs shock due to its weight
C. makes rigging a swivel unnecessary
D. prevents the tow from yawing by the drag of the chains in a seaway
KEY: B当拖尾部的时候，锚链被使用，提供有效的下垂曲线，和减缓由于重量引起的震动。 [90] A chain stripper is used to ______.
A. prevent chain from clinging to the wildcat B. clean the marine debris from the chain
C. flake chain from a boat?s chain locker D. clean chain prior to an x-ray inspection
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KEY: A分链器用来防止链条和持链轮绞缠。 [91]同上
[92]A channel is started as having a controlling depth of 38 feet. Which statement is TRUE?_____
A. At least 80% of the channel is cleared to the charted depth. B. At least 50% of the channel is cleared to the charted depth. C. 100% of the channel depth is clear to 38 feet.
D. The sides of the channel conform to at least 50% of the controlling depth.
KEY: C航道被标注为38英尺的限制水深，则水道百分之百都拥有38英尺的水深。 [93]同上
[94] A chart has extensive corrections to be made to it. When these are made and the chart is again printed, the chart issue is a ______.
A. first edition B. new edition C. revised edition D. Reprint
KEY: B海图放大量的改正，当改正后海图被重新印刷的时候，称为新版海图。 [95]同上
[96]A chart projection depicting the poles and a small area on either side of a connecting meridian,
that is sometimes used for star charts, is the ______.
A. azimuthal gnomonic projection B. Lambert conformal projection
C. transverse Mercator projection D. polyconic projection
KEY: C海图投影描述极低和链接子午线的任意一边的小区域，有时用作恒星图是墨卡托投影。
[97]A chart with a natural scale of 1：160，000 is classified as a______．
A．sailing chart B．general chart C．coast chart D．harbor chart
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KEY: B海图的比例尺为1：160，000是总图。 [98] A check line is ______.
A. a safety line attached to a man working over the side B. used to measure water depth
C. used to slow the headway of a barge D. used to measure the overhead height of a bridge KEY: C止荡绳用来减缓船舶前行。 [99]同上
[100] A chock ______.
A. is a deck fitting used to shackle gear to the deck
B. permits easy jettisoning of deck cargo in an emergency C. prevents stress concentration in the bulwark
D. provides openings through the bulwark for mooring lings KEY: D导缆口是为了缆绳通过舷墙的开口。 [101] A chock is a ______.
A. deck fitting used to secure mooring lings
B. casting fitted at the side of a weatherdeck, used as a fairlead C. sharp block of wood used to support hygroscopic cargo D. smoke pipe for the galley stove
KEY: B导缆器是固定在露天甲板舷边的，用来导缆。 [102]同上
[103] A clause in the charter party requires a vessel?s owner to pay dispatch money when the vessel ______.
A. changes berths to expedite loading or discharging
B. does not load and discharge its cargo in the time specified C. is not ready to load or discharge cargo
D. loads and discharges its cargo in less time than specified KEY: D租船合同的条款要求船东支付速遣费用，当实际装货事件少于规定装货时间时。
[104] A CLEARLY MARKED WAY IN THE VESSEL WHICH HAS TO BE FOLLOWED IN CASE OF AN EMERGENCY defines ______.
A. Escape route B. Alley way C. Corridor D. Embarking way
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KEY: A一处清楚表明的路线，在紧急情况是使用的叫做逃生路线。
[105] A cloud of marked vertical development (ofen anvil-shaped) would be classified as ______.
A. cirrus B. cirrocumulus C. altocumulus D. Cumulonimbus
KEY: D云层明显的垂向发展通常为毡状被划分为积雨云。
[106] A cloud sequence of cirrus, cirrostratus, and altostratus clouds followed by rain usually
signifies the approach of a(an) ______.
A. occluded front B. stationary front C. warm front D. cold front
KEY: C云以卷云，卷层云和高层云出现的并伴随降雨的通常意味着暖风的临近。 [107]同上
[108] A CO2 portable extinguisher is annually checked by ______.
A. reading the gage pressure B. weighing the extinguisher
C. discharging a small amount of CO2 D. seeing if the seal has been broken
KEY: B二氧化碳灭火器每年用称重法称重检查。 [109] A cofferdam is ______.
A. any deck below the main deck and above the lowest deck B. a member that gives fore-and-aft strength
C. made by placing two bulkheads a few feet apart D. a heavy fore-and-aft beam under the deck
KEY: C油船上隔离空舱是在两个舱室间构成的小尺寸的隔离舱。
[110] A combination or all-purpose nozzle produces ______. A. low-velocity fog only B. a solid stream only
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