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單項(xiàng)選擇題

“Stand by engine” means （）.

A.prepare to stop the engine
B.assemble an engine on its bedplate
C.make an engine ready for starting
D.make an engine run steadily

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單項(xiàng)選擇題

Smaller engines can be made more rigid than large ones and may not have （）.

A.through bolts
B.turbo-chargers
C.bed plates
D.columns

單項(xiàng)選擇題

Smaller engines can be made more rigid than large ones and may not have （）.

A.through bolts
B.dividing walls
C.sloping surfaces
D.relative angles

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