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單項(xiàng)選擇題

（）is not installed on the emergency switchboard.

A.Ammeter
B.Voltmeter
C.Wattmeter
D.Synchroscope

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單項(xiàng)選擇題

（）belongs to emergency power supplying equipments.

A.argo winch
B.Windlass
C.Steering gear
D.Air compressor

單項(xiàng)選擇題

（）belongs to emergency power supplying equipments.

A.Emergency fire pump
B.Windlass
C.Main sea water pump
D.Fresh water pump

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