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單項選擇題

Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.

A.have nothing to do with
B.having nothing to do with
C.have much to do with
D.having much to do with

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單項選擇題

Fuel oil is pumped by means of （） from the bunker tanks.

A.a transfer pump
B.a bilge pump
C.a service pump
D.a vacuum pump

單項選擇題

Fuel is not supplied to the corresponding cylinders due to （）.

A.a failure of the motor
B.a failure of lubricator
C.a failure of cylinder
D.a failure of fuel pump

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