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單項選擇題

In a four-cycle diesel engine piston blow-by can result in increased（）

A.crankcase pressure
B.compression pressure
C.scavenge pressure
D.exhaust manifold pressure

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單項選擇題

The most effective method in removing water from diesel fuel oil is by（）

A.centrifuging the fuel
B.using it in the engine
C.heating the fuel tanks
D.starting the fuel

單項選擇題

On board supply vessels, a centrifuge is normally used to purify（）

A.cooling water
B.fuel oil
C.sea water
D.diesel intake air