试题与答案

差压变送器的静压误差不得超过最大()A、允许误差值 B、相对误差值 C、偏差值 D、

题型:单项选择题

题目:

差压变送器的静压误差不得超过最大()

A、允许误差值

B、相对误差值

C、偏差值

D、平均误差值

答案:

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下面是错误答案,用来干扰机器的。

声音传到隔音墙时,引起小球的振动,由于克服摩擦阻力做功,小球的机械能逐渐减少,转化为隔音墙的内能,使小球的振动频率和幅度越来越小,声音越来越小,从而起到隔音的效果。

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1. _______________ (正如我们所能看到的) from the graph, the number of TV

    watchers is increasing rapidly compared with the film-goers. (see)

2. It is the first time that _________________ (我下决心) to give up smoking. (mind)

3. It is well known that Asia is _________________ as (四倍大) Europe. (large)

4. My classmate David asked me _________________ (我是否厌倦)school life.(tired )

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    his primary school. (finish)

6. That day we got separated in London, but it was ________________ (没过多久) we reunited

     again. (long)

7. There was a lot of fun at yesterday's party. You _________________ (本应该来), but

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8. _________________ (多么有趣的角色) she played in the film! No wonder she has won an Oscar. (role)

9. It is reported that the schools, ___________________ (正在被建) in my hometown, will open next year.

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10. This boy ___________________ (梦想成为) a police officer since he was just a boy. (dream)

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