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單項(xiàng)選擇題

Fuels of high quality with their earlier ignitions will cause higher （）pressure in cylinders of a diesel engine.

A.compression
B.maximum
C.rated
D.oil

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單項(xiàng)選擇題

Fuel pump index is （）.

A.the viscosity index
B.the fuel oil contents
C.the starting speed
D.the reading at the rack

單項(xiàng)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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