题目内容

What happens when someone who works mostly with his brain makes something with his hands?When someone who works mostly with his brain does something with his hands,.

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What is the point that the author wants to make in this article?The author's point is that considering howit is to work with one's hands and one can make in those jobs, it is curious that more young people coming out of school aren'tinstead of becoming salesmen.

在气压传动中人们利用( )来传递力和运动。

A. 固体
B. 液体
C. 气体
D. 绝缘体

在压缩空气产生的气源装置中进行的能力转换为()。

A. 机械能转换为气体压力能
B. 气体压力能转换为机械能
C. 机械能转换为液体压力能
D. 液体压力能转换为机械能

气体具有如下性质( )。

A. 无固定形状而只有一定体积
B. 无一定形状而只有固定体积
C. 有固定形状和一定体积
D. 无固定形状又无一定体积

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