單項選擇題() provide the water to the pistons.

A.Pneumatic pipes
B.Hydraulic pipes
C.Telescopic pipes
D.Operating gas pipes


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

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

2.單項選擇題() 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

3.單項選擇題() 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

5.單項選擇題() 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