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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶动力装置

单项选择题

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

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