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

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單項選擇題

Water accumulating in the crankcase of a diesel engine could indicate（）

A.a cracked cylinder liner
B.excessive water in the fuel
C.a leaking intercooler
D.excessive moisture in the scavenge air

單項選擇題

The device used to store a charged pressure for a hydraulic starting system is called the（）

A.reservoir
B.hand pump
C.accelerator
D.accumulator

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