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單項選擇題

The fuel pipes and ducts should be blown with （）.

A.atmosphere
B.the fresh water
C.compressed air
D.chemical compounds

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單項選擇題

The fuel oil system for a diesel engine can be considered in two parts--the fuel supply and the （） systems.

A.fuel treatment
B.fuel combustion
C.fuel injection
D.fuel separating

單項選擇題

The fuel is supplied to the pump through ports or openings in the （） or cylinder of the pump.

A.bottle
B.injector
C.piston
D.barrel

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