问题描述：
[单选]
The cylinder contains a great weight of air and is capable of burning a great quantity of fuel at（）．
A．the beginning of the compression stroke
B．the beginning of the suction stroke
C．the end of the working stroke
D．the end of the exhaust stroke
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答案解析：无
答案解析：无
上一篇：The cylinder cover is not provided with（）．
下一篇：The cylinder and piston must be warmed up（）to a temperature of about 140 degF in standing by engine．
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