單項(xiàng)選擇題() is used for washing and drinking.

A.The ballast system
B.The salt water system
C.The bilge system
D.The domestic system


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1.單項(xiàng)選擇題() at the end of the distribution pipe ensures that adequate pressure is maintained by the pump.

A.A relief valve
B.An alarm
C.A pressure gauge
D.A non-maim valve

2.單項(xiàng)選擇題() allows for expansion and water make up in the water cooling system.

A.A top tank
B.A head tank
C.A head valve
D.A drain tank

3.單項(xiàng)選擇題() rods are not in proper condition so that too much fuel is supplied to the corresponding cylinder.

A.Piston
B.Sounding
C.Regulating
D.Connecting

4.單項(xiàng)選擇題() is not properly set thus causing either advanced or retarded firing.

A.A piston
B.A fuel injection pump
C.A feed water pump
D.A lube oil pump

5.單項(xiàng)選擇題() the supercharge pressure is, () power an engine develops.

A.The higher;the more
B.Higher;more
C.Higher;little
D.The higher;the less