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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1.單項(xiàng)選擇題()belongs to emergency power supplying equipments.

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

2.單項(xiàng)選擇題()belongs to emergency power supplying equipments.

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

3.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

4.單項(xiàng)選擇題()is not installed on the emergency switchboard.

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

5.單項(xiàng)選擇題()can be used to prevent hydraulic system overloaded or keep the pressure of oil outlet from pump constant.

A.Overflow valve
B.Reducing valve
C.Balancing valve
D.Reducing valve or balancing valve

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