问题 问答题 简答题

在蒸汽管道上,设置疏水器的作用是什么?

答案

参考答案:

1、可以迅速有效地排除用汽设备和管道中的凝结水,

2、阻止蒸气漏损和排除空气。

3、可以防止凝结水对设备的腐蚀。可以防止击,振动及结冻胀裂管道。

单项选择题
阅读理解

阅读理解。

     Years ago, I lived in a building in a large city. The building next door was only a few feet away from mine.

There was a woman who lived there, whom I had never met, yet I could see her seated by her window each

afternoon, sewing or reading.

     After several months had gone by, I began to notice that her window was dirty. Everything was unclear

through the dirty window.I would say to myself,"I wonder why that woman doesn't wash her window. It really

looks terrible."

     One bright morning I decided to clean my flat, including washing the window on the inside.

      Late in the afternoon when I finished the cleaning, I sat down by the window with a cup of coffee for a

rest. What a surprise! Across the way, the woman sitting by her window was clearly visible. Her window was

clean!

     Then it dawned on me. I had been criticizing (批评) her dirty window, but all the time I was watching hers

through my own dirty window.

     That was quite an important lesson for me. How often had I looked at and criticized others through the

dirty window of my heart, through my own shortcomings?

      Since then, whenever I wanted to judge (评判) someone, I asked myself first, "Am I looking at him through my own dirty window?" Then I try to clean the window of my own world so that I may see the world about

me more clearly.

1. The writer couldn't see everything clearly through the window because_____.  

A. the woman's window was dirty   

B. the writer's window was dirty

C. the woman lived nearby     

D. the writer was near-sighted

2. The writer was surprised that _____.

A. the woman was sitting by her window

B. the woman's window was clean

C. the woman did cleaning in the afternoon

D. the woman's window was still terrible

3." It dawned on me" probably means"______".

A. I began to understand it    

B. it cheered me up

C. I knew it grew light     

D. it began to get dark

4. It's clear that _______.

A. the writer had never met the woman before

B. the writer often washed the window

C. they both worked as cleaners  

D. they lived in a small town

5. From the passage, we can learn ______.

A. one shouldn't criticize others very often

B. one should often make his windows clean

C. one must judge himself before he judges others

D. one must look at others through his dirty window