单项选择题

（）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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单项选择题

A.Accommodation lighting
B.Windlass
C.Main sea water pump
D.Compressor

单项选择题

A.Navigation lamp
B.Windlass
C.Main sea water pump
D.Compressor

单项选择题

A.Ammeter and changeover switch
B.Speed governor device
C.Synchroscope
D.Wattmeter