题目内容
(请给出正确答案)
[单选题]
Friction()
A.分数
B.小说
C.摩擦
答案
C、摩擦
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A.分数
B.小说
C.摩擦
第3题
A.depression
B.barricade
C.resistance
D.friction
第5题
A.have insight into
B.come up with
C.allow for
D.reflect on
第6题
A.Higher hardness
B.Hot hardness
C.Wear resistance
D.Toughness and Low friction
第7题
A.control friction and wear
B.improve corrosion resistance
C.change physical property
D.alter dimension and vary appearance
第9题
A.power output
B.friction and wear
C.indicated pressure(指示压力)
D.rated horsepower
第10题
A.cool the tool and work piece
B.reduce the friction
C.protect the work against rusting
D.improve the surface finish
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