题目内容

链传动是借助链和链轮间的( )来传递动力和运动的

A. 摩擦
B. 粘接
C. 啮合
D. 摩擦和粘接

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Betsy earned a teaching ( ) from San Jose State University.

A. qualification
B. quantity
C. certificate
D. proof

Chrysler has been ( ) from strong sales of its redesigned, industry-leading lineof minivans.

A. deriving
B. acquiring
C. rewarding
D. benefiting

Do you know what happened ( ) the car in the crash?

A. at
B. to
C. on
D. into

He says he doesn’t want to see a doctor, but I’m afraid he has no ( ) .

A. alternative
B. alternate
C. alternatives
D. alternates

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