The purpose of treating the cooling water of the diesel engine is to（）
Ⅰ. resist the scale formation in the cooling chamber
Ⅱ.lubricate the engine part
Ⅲ.increase thermal capacity
Ⅳ.resist corrosion
A.Ⅰ+Ⅱ
B.Ⅱ+Ⅲ
C.Ⅲ+Ⅳ
D.Ⅰ+Ⅳ
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A.disengaging the clutch firstly, then stopping the main engine
B.stopping the main engine firstly, then disengaging the clutch
C.stopping the cooling water pump firstly, then stopping the main engine
D.stopping the main engine and disengaging the clutch at the same time
A.the master
B.the chief engineer
C.the bridge
D.the company superintendent
A.open the indicator cocks
B.supply some CYL Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)
C.put the fuel handle in the “stop” position
D.pump up the air bottle
A.UJT or BJT
B.BCD or OCD
C.JFET or IGFET
D.LED or LCD
A.Cargo winch
B.Windlass
C.Steering gear
D.Main air compressor
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