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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

The operating medium for control systems may be （）.

A.compressed air
B.hydraulic oil
C.electricity
D.All of the above

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单项选择题

（） systems are provided with a stand-by device which will automatically be put in use in the even of the running device failing through a fault condition.

A.Alarm
B.Monitoring
C.Auto start-up
D.None of the above

单项选择题

The difference between measured and desired values is called （）.

A.make-up
B.desired value
C.deviation
D.set value

单项选择题

With UMS, when the engine room is unwatched （） will control the main engine.

A.the bridge officer on watch
B.the chief engineer
C.the duty engineer
D.the duty motorman

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