题目内容

文字是交际的最重要的辅助工具。

A. 对
B. 错

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The ______ is the source of power that provides the torque or turning force which is used to drive the vehicle.

A. engine
B. cylinder
C. bore
D. crankshaft

The cylinders and pistons are in the ______ the cylinder block and the crankshaft is in the lower part.

A. left part of
B. upper part of
C. right part of
D. bottom part of

The ______ ignites the air-fuel mixture,which burns very rapidly to produce gases at high pressure in the cylinder.

A. distributor
B. camshaft
C. spark
D. engine

The cylinder ______ is bolted to the top of the cylinder block.

A. gasket
B. piston
C. cover
D. head