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单选题
在使用（）前，应检查其电源、开关、连接电缆、灯具的水密性能和绝缘电阻情况。
A
航行灯及信号灯
B
探照灯、运河灯
C
闪光灯
D
普通照明灯
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更多 “单选题在使用（）前，应检查其电源、开关、连接电缆、灯具的水密性能和绝缘电阻情况。A 航行灯及信号灯B 探照灯、运河灯C 闪光灯D 普通照明灯” 相关考题
考题
单选题In anchoring orders, up and down means（）.A
the chain is not uprightB
the chain is tightC
the chain is uprightD
the chain is slack
考题
单选题值班驾驶员应对驾驶台有关设备作定期检查，以确保：（） Ⅰ、手动操舵或自动舵按船舶正确的航向行驶 Ⅱ、有条件时每班应至少测定一次标准罗经的误差 Ⅲ、每班至少试验一次自动舵的手动操作A
Ⅰ、ⅡB
Ⅰ、Ⅱ、ⅢC
Ⅰ、ⅢD
Ⅱ、Ⅲ
考题
单选题Which general statement concerning radar is FALSE?（）.A
Raising the antenna height increases the radar rangeB
The ability of radar to detect objects is unaffected by weather conditionsC
Radar bearings are less accurate than radar rangesD
Radar should be checked regularly during clear weather to ensure that it is operating properly
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单选题Failure of fuel injection is usually due to trouble in the （）.A
exhaust valvesB
mechanical lubricatorsC
cooling water pumpsD
fuel injection pumps
考题
单选题A fire pump may be used for other purposes if（）.A
the other services are run off a reducing station with a pressure gageB
one of the required pumps is kept available for use on the fire main system at all timesC
no relief valves are installedD
all of the above conditions are met
考题
单选题For safe storage, the maximum allowable temperature to which refrigerant bottles should be exposed is （）.A
100℃B
125℃C
150℃D
175℃
考题
单选题停用油水分离器的操作步骤是（）。 Ⅰ、对装置进行冲洗（排液应回舱底，不可排出）； Ⅱ、装置内注满清水后，停机关阀； Ⅲ、进行手动排油； Ⅳ、手动清洗油分浓度监测装置。A
Ⅰ－Ⅲ－Ⅱ－ⅣB
Ⅲ－Ⅰ－Ⅳ－ⅡC
Ⅲ－Ⅳ－Ⅰ－ⅡD
Ⅰ－Ⅲ－Ⅳ－Ⅱ
考题
单选题What does the term end-for-end refer to in regard to a wire towing hawser（）.A
Cutting off the bitter and towing ends of the wire ropeB
Splicing two wire ropes togetherC
Removing the wire rope from the drum and reversing it so that the towing end becomes the bitter endD
Removing the wire rope from the drum and turning it over so that the wire bends in the opposite direction when rolled on a drum
考题
单选题两台同型号并联运行的同步发电机，由于柴油机调速器的调速率不同，若自动调频调载装置未投入，最大可能导致（）。A
电网电压不稳定B
有功负荷变动时，分配不均匀C
无功负荷变动时，分配不均匀D
主开关跳闸
考题
单选题船舶的横稳性大小（）。A
随吃水的增加而减小B
随吃水的增加而增大C
与吃水大小无关D
与吃水的关系不能确定
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