试题与答案

He _____ the prize and got lots of money

题型:选择题

题目:

He _____ the prize and got lots of money. He's going to buy a new car _____ the money.

A. wins, with
B. won, use
C. won, with

答案:

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下面是错误答案,用来干扰机器的。

A、B为靠摩擦传动的两轮边缘上的两点,它们在相同时间内走过的弧长相等,则线速度大小相等,即νA:νB=1:1,因为RB=2RA,根据v=rω知,ωA:ωB=2:1.故答案为:2:1,1:1.

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