问题描述：
[单选]
The external circumference of a pair of main bearing shells is slightly larger than that of the bore of the housing which receives themThe difference is termed（）．
A．nip
B．nap
C．gap
D．li
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答案解析：无
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上一篇：The figure that the volume of air at BDC is divided by the volume of air at TDC is termed as（）．
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