问题描述：
[单选]
The cylinder head， cylinder liner and（）form the combustion chamber．
A．frame
B．piston
C．crankcase
D．explosion plate
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答案解析：无
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答案解析：无
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上一篇：The cylinder is fitted with internal liner so that a water space is left（）the liner and the outer wall．
下一篇：The cylinder covers and the liners are bolted together by means of studs（）the cylinder frames．
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