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单选题
气缸盖上微小裂纹采用锉刀、油石或砂轮打磨消除后,应进行()检验合格后方可继续使用。
A
观察
B
液压试验
C
射线探伤
D
涡流探伤
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单选题During steering gear test should be moved through its full travel in both directions()A
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the cylinderC
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单选题柴油机工作时缸套内表面机械应力哪种讲法是不正确的()。A
内表面切向应力最大,外表面切向应力最小B
内表面径向应力最大,外表面径向应力为零C
内表面为压应力,外表面为拉应力D
切向应力为拉,径向应力为压
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单选题As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()A
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1+2+4B
1+4+5C
2+3+5D
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单选题在船上先装主机后装轴系时,为了保证轴系准确安装,要求()。A
严格控制各节中间轴的长度B
有一节中间轴的长度不确定C
按轴系实际长度确定各中间轴长度D
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单选题通常油速特性用喷注的以下参数来表征()。 ①油束射程; ②雾化细度; ③雾化均匀度; ④油束锥角; ⑤油粒直径; ⑥油粒的密集程度。A
①+②+③+④B
①+③+④+⑤C
①+③+④+⑥D
②+④+⑤+⑥
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单选题If a charter-party,although for two consecutive voyages,is held to be one indivisible contract,a deviation on the first voyage entitles the Charterer to treat the breach as a repudiation of()contract.A
a part ofB
the wholeC
3/4th ofD
1/2nd of
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单选题While on watch at sea you must maintain a proper lookout at all times. On a 700-foot cargo vessel being hand-steered during daylight hours in good visibility and clear of any navigational hazards,the lookout may be().A
the helmsmanB
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单选题()will be paid by shipowner after tallyman doing the tally work.A
cargo-handling expenseB
tally moneyC
cargo-tally duesD
tally fees
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单选题Biodegradation of the oil slick in sea water is assisted by all the following marine micro-organisms which are capable of metabolising oil compounds except().A
bacteriaB
mouldsC
yeastsD
seals
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单选题当船舶有引航员时,下列做法错误的是:() Ⅰ、船长在非危险航段暂离驾驶台时应告知引航员,并指定引航员负责 Ⅱ、船长对引航员的错误操作应及时指出,必要时即行纠正 Ⅲ、如值班驾驶员对引航员的行动或意图有所怀疑,应立即报告船长 Ⅳ、船舶由引航员引航时并不解除船长管理和驾驶船舶的责任A
ⅠB
Ⅰ、Ⅱ、ⅢC
Ⅰ、ⅢD
Ⅱ、Ⅲ
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②③④⑤B
①②③④⑤C
①②③⑤D
①②④⑤
考题
单选题对于老旧运输船舶,原则上按《船舶登记条例》的规定,核发有效期为5年的船舶国籍证书。如船龄距特别定期检验日期不足5年,船舶国籍证书的有效日期不得超过()A
1年B
2年C
5年D
船舶特别定期检验日期之后三个月
考题
单选题Water lubricated tailshaft bearings wear,()A
the after one is more than forward oneB
the forward one is more than after oneC
the forward one is the same with after oneD
it depends on the type of engine
考题
单选题五星轮式液压马达柱塞与五星轮之间设压力环的作用是()。A
减轻柱塞底部磨损B
改善柱塞底部密封C
确定柱塞底部承受油压面积D
B+C
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