单项选择题
A.Emergency fire pump B.Windlass C.Main sea water pump D.Fresh water pump
（）belongs to emergency power supplying equipments.A.Acc...
单项选择题（）belongs to emergency power supplying equipments.
A.Accommodation lighting B.Windlass C.Main sea water pump D.Compressor
（）belongs to emergency power supplying equipments.A.Nav...
A.Navigation lamp B.Windlass C.Main sea water pump D.Compressor
（）is not installed on the emergency switchboard.A.Ammet...
单项选择题（）is not installed on the emergency switchboard.
A.Ammeter and changeover switch B.Speed governor device C.Synchroscope D.Wattmeter
