试题与答案

蒸汽包上都安装了哪些安全附节?

题型:问答题 简答题

题目:

蒸汽包上都安装了哪些安全附节?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A, C, E

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The umbrella is a very common object. It keeps the       and the sun off the people. Most umbrellas can be folded up(折叠) so it is        to carry them.
However, the umbrella has not always been as        as it is now. In the past, it was a symbol of importance. Some African countries still use umbrellas in this        .Someone carries an umbrella and walks behind the king or important person.
Umbrellas are very old. People in different parts of the world began to        umbrellas at different times. The Chinese had them more than 3,000 years ago. From there, umbrellas        to India and Egypt. In Greece and Rome,        wouldn’t use them. They believed umbrellas were only for women.
England was        the first country in Europe where common people used umbrellas against rain. The weather there is very        and umbrellas are very useful.
Everybody uses umbrellas today. The next time you        one, thinking that for centuries only great men and women used them, you’ll feel you are important people, too.
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