單項(xiàng)選擇題

（）belongs to emergency power supplying equipments.

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

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單項(xiàng)選擇題

（）is not installed on the emergency switchboard.

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

單項(xiàng)選擇題

（）is not installed on the emergency switchboard.

A.Control panel
B.Paralleling panel
C.Load panel
D.Busbar