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單項(xiàng)選擇題

The engine is started with （） supplied from air receivers.

A.pressure oil
B.pressure water
C.compressed air
D.cooling water

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單項(xiàng)選擇題

The engine is reversed by axial displacement of the camshafts In order for this to be carried out, the cams are （） with inclined transition faces.

A.lathed
B.shaped
C.shrunk
D.developed

單項(xiàng)選擇題

The engine has one or two group of fuel pumps, depending upon （）.

A.the number of fuel valves
B.the number of cylinders
C.the speed of engine
D.the power of engine

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