问题 问答题 简答题

高压加热器的保护装置的作用是什么?有几种型式?

答案

参考答案:

在高压加热器发生故障或水侧管子破裂时,为了不中断锅炉给水和高压给水从抽汽管道倒入汽轮机内,造成严重的水击事故。在高压加热器上设有自动旁路保护装置。可分为水压液动控制和电动控制两种。

阅读理解

任务型阅读。

     How can you think in English? I think the best way is to practice as what a football player does every

day. During the practice, the football players pass the ball to his teammates over and over again, So they

won't have to think about passing the ball in the game, they will just do it. You can train yourself to think

in English in this way. The first (1) _____ is to think _____ the words that you use daily, simple everyday

words like book, shoe or tree. For example, whenever you see a"book", you should think of it in English

instead of in your mother language. (2) After you have learned to think of words in English, you'd better

go on to the next step--thinking of sentences in English.

      (3) 听是学英语的一个非常有用的方法。 Listen first and don't care too much about whether you

fully understand what you're hearing. Try to say what you hear as much as possible. The more you listen,

the better you learn. After you reach a higher level, start having conversations with yourself in English.

This will lead you to think in English.

1. 在(1)句的空白处分别填入适当的词,使句意完整,上下文通顺。

    ___________; ____________

2. 将(2)句译成中文。

   _________________________________________________________

3. 将(3)句译成英文。

   _________________________________________________________

4. 在文中找出与所给句子意思相近的句子。

   If you listen more, you' ll learn better.

   _________________________________________________________

5. 写出或在文中找出最能表达文章大意的句子。

   _________________________________________________________

多项选择题