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单选题
英版海图图式中,灯质缩写“Oc”表示()。
A
明暗光
B
等明暗光
C
联闪光
D
混合联闪光
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考题
单选题在航次租船条件下,除货物装卸费用和垫舱物料依承租双方约定外,出租人需负担()等。 Ⅰ.燃料费; Ⅱ.物料费; Ⅲ.淡水费; Ⅳ.港口使费。A
Ⅰ,Ⅱ,ⅣB
Ⅰ~ⅣC
Ⅱ~ⅣD
Ⅰ~Ⅲ
考题
单选题Prior to loading barges over the stern of a LASH vessel,the vessel should be trimmed in what manner?().A
Two to four feet by the bowB
Slightly by the bowC
No trim should be permittedD
Slightly by the stern
考题
单选题下列DSC呼叫的有关规定中不正确的是()。A
船台只能在海岸电台开放的国内DSC频率上呼叫;B
船台也可以在海岸电台开放的国际DSC频率上呼叫;C
船台在MF/HM波段收到海岸电台的DSC呼叫后,应在5s-4.5min内进行人工收妥确认。D
海岸电台收到船台的DSC测试呼叫后,应给予收妥确认,而不用进一步的通信。
考题
单选题The term “moderate speed” was previously interpreted as meaning a speed which would enable a vessel ()within half the range of visibility.A
stoppingB
being stoppedC
to stopD
to be stopped
考题
单选题An alternator switchboard has a synchroscope and synchronizing lamps, if the synchroscope is broken, which of the steps listed is the most essential before an alternator can be paralleled with the bus ()A
The breaker should be closed when one synchronizing lamp is dark and the other is brightB
The breaker should be closed when both synchronizing lamps are brightC
The frequency meter should be used to determine that the incoming alternator frequency is slightly higher than the busD
A portable phase sequence indicator must be used to verify the information from the lamps
考题
单选题Which is the pollution prevention equipment?()A
booster pumpB
evaporatorC
incineratorD
cooler
考题
单选题关于利用流力掉头,下列说法中错误的是()。A
掉头船舶利用航道内流速、流向分布上的差异进行掉头的方法称为利用流力掉头法B
大型船舶常利用此法以缩小掉头所需水域’C
大型顶推船队常利用此法以缩小掉头所需水域D
小型船舶常利用此法以缩小掉头所需水域
考题
单选题以下关于电路中电流方向的说法中,错误的是()。A
电流的实际方向不一定与其参考方向一致B
电流的参考方向可以任意选定C
电流的实际方向即为正电荷移动的方向D
电流总是从电源的正极流向电源的负极
考题
单选题下列()不是提高船舶的载重能力的具体措施。A
装载重货后合理平舱B
减少船舶常数C
合理确定航次的油水数量D
正确确定船舶的装载水尺或载重线
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