问题描述：
[单选]
The way to reduce（）is to build up a film of lubricant between any two surfaces that rub against each other．
A．friction
B．collision
C．inertia
D．resistance
参考答案：查看无
答案解析：无
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答案解析：无
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上一篇：The withdrawing of the cylinder liners， in general， depends on their（）．This may amount to approximately 1/120 of the diameter in some engines．
下一篇：The viscosity regulator controls the fuel oil temperature（）provide oil at the correct viscosity for combustion．
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