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單項(xiàng)選擇題

The cylinder liners are made of （） and the cylinder surfaces are sometimes chromium-plated.

A.steel
B.copper
C.cast iron
D.stainless steel

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單項(xiàng)選擇題

The cylinder is fitted with internal liner so that a water space is left （） the liner and the outer wall.

A.around
B.among
C.in
D.between

單項(xiàng)選擇題

The cylinder head, cylinder liner and （） form the combustion chamber.

A.frame
B.piston
C.crankcase
D.explosion plate

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