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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相关考题
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单项选择题
（） handle and instruments are on the front.
A.open
B.open front type
C.live front type
D.None of the above -
单项选择题
The （） is a crystal which, under pressure, produces an electric current which varies with the pressure.
A.alternator
B.glass thermometer
C.burdon tube
D.piezoelectric pressure transducer -
单项选择题
Remote control means that （）.
A.the system is manned manually
B.the system is situated remotely from the operator
C.the system is controlled automatically
D.all the above
