问题描述：
[单选]
The cooling liquid used for the cylinder may be referred to as（）．
A．jacket water
B．make-up water
C．boiler water
D．flushing water
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答案解析：无
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上一篇：The cooling of the piston is carried out by circulating（）across the underside of the crown and inside the ring belt or through specially shaped passages．
下一篇：The cooler as the liquid becomes，（）．
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