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问题

A lubricant often has to perform. many duties in any situation, in addition to its fundame


A lubricant often has to perform. many duties in any situation, in addition to its fundamental job of_____.

A.resisting oxidization

B.reducing friction

C.promoting moving speed

D.developing inertia

请帮忙给出正确答案和分析,谢谢!

参考答案
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