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单选题
我国根据发生触电危险的环境条件将安全电压界定为三个等级，高度危险的建筑物中其安全电压为（）V。
A
2.5
B
12
C
36
D
65
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考题
单选题船舶减速，主机转速减低，船舶从初速v0减至与降低后主机转速相对应的定常速度v1时，关于船舶前进距离说法正确的是（）。A
v0越大，v1越小，船舶的前进距离越大B
v0越大，v1越小，船舶的前进距离越小C
v0越大，v1也大，船舶的前进距离越大D
v0越小，v1越大，船舶的前进距离越大
考题
单选题By definition, a spar deck is the（）.A
lower most continuous deck not broken by water tight bulkheadsB
after most weather deck above the main strength deckC
upper or weather deck above the main strength deckD
deck of light construction below the main or strength deck
考题
单选题The domestic fresh water pump starters are controlled by pressure switches which operate when the pressure in the tank varies within predetermined limits as water is drawn offThe word “which” means （）.A
startersB
pressure switchesC
pressureD
water
考题
单选题Inerting means（）.A
the introduction of inert gas into a tank with the object of reducing the oxygen content to below 8% by volumeB
the introduction of inert gas into a gas free tank for the purpose of reducing the oxygen content to below 8% by volumeC
the introduction of inert gas into a cargo tank during cargo discharge to replace the volume of discharged cargoD
All of the above
考题
单选题Should it appear that war or blockade would prevent the vessel from safely reaching the port of destination and / or discharging the goods thereat，the Carrier（）.A
is entitled to discharge the goods at the port of loading or any other safe and convenient place and terminate the contract of carriageB
is not entitled to terminate the contract of carriageC
is not entitled to claim against the shipper or charterer any damage that he will suffer with the cargo on boardD
is entitled to claim freight with the cargo on board
考题
单选题根据轮机长的职责规定，在主机吊缸前轮机长应做的主要工作（）。A
报告船长并征得其同意，并对参加吊缸工作人员进行安全教育B
亲自指挥吊缸工作C
吊缸前检查起吊及其他要用的工具D
在操纵台上挂上“正在检修、不准动车”警示牌
考题
单选题船上油污应急计划;按规定，下列属于强制性规定的是（）。 Ⅰ、报告程序；Ⅱ、油污事故中需联系的当局或人员名单；Ⅲ、为减少或控制油类排放的措施；Ⅳ、国家和地方协作；Ⅴ、应急反应设备；Ⅵ、计划检查和演练。A
Ⅰ＋Ⅱ＋Ⅲ＋ⅣB
Ⅰ＋Ⅱ＋Ⅴ＋ⅥC
Ⅲ＋Ⅳ＋Ⅴ＋ⅥD
Ⅱ＋Ⅲ＋Ⅴ＋Ⅵ
考题
单选题When a rescue vessel approaches a lifeboat in heavy seas，the person in charge of the lifeboat should（）.A
tie up to the rescue vesselB
transfer only those personnel who are not seasickC
wait for calmer weather before transferring personnelD
transfer all personnel immediately
考题
单选题某油轮某航次Δ=18000t，空船重量ΔL=5500t，航次储备量ΣG=1800t，船舶常数C=200t，油脚S=60t，则本航次的航次净载重量NDW=（）t。A
10440B
10500C
12500D
16000
考题
单选题调距桨装置的转叶机构的主要作用是（）。A
将回转运动变成桨叶的偏转B
在故障时，将螺距调节到正螺距C
将往复运动变回转运动，实现对螺旋桨驱动D
将往复运动变成桨叶的转动，实现螺距的改变
考题
单选题《规则》第十六条规定：“须给他船让路的船舶，应尽可能及早地采取大幅度的行动，宽裕地让清他船”；其对让路船的行动要求可归纳为“早、大、宽、清”4个字；“（）”是对最后避让结果的要求。A
早B
大C
宽D
清
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