问题 单项选择题

计算机系统接地线截面的选择(采用绝缘铜绞线或电缆为接地线)。

机柜与钢筋接地连接线为( )。

A.2.5mm2
B.4mm2
C.6mm2
D.8mm2

答案

参考答案:A

解析: 根据DL/T 5136-2001第13章选择。

阅读理解

阅读理解。

       Years ago, I lived in a building in a large city. There was another building not far from mine. A woman

  lived there. I had never met her, but I could see her sit by the window each afternoon, sewing (缝纫)or

  reading.

       After several months, I began to notice that her window was dirty. Everything was unclear through the

   dirty window. I would say to myself, "What a lazy woman! I wonder why she doesn't wash her window.

   It really looks terrible."

       One bright morning, I decided to clean my flat, including the windows. I worked the whole morning.

  When I finally finished the cleaning, I sat down by the window with a cup of coffee for a rest. What a

  surprise! Everything in the woman's flat could be seen clearly. Her window was clean!

       I began to understand. I watched the woman's window from my own dirty window. That's the

  problem!

       That is quite an important lesson for me. How often do I look at and criticize others through the dirty

  window of my heart?

       From them on, whenever I want to judge someone, I ask myself first, "Am I looking at him through my

   dirty window?" Then I try to clean the window of my own world so that I may see others' world more

  clearly.

1. What does the underlined word  judge mean in Chinese according to the passage?

A. 赞美  

B. 评判      

C. 妒嫉    

D. 鼓励

2. Why couldn't the writer see things clearly through the window several months later?

A. Because the woman's window was dirty.  

B. Because his own window was dirty.

C. Because the woman lived far away.      

D. Because he had poor eyesight.

3. What can we learn from the passage?

A. one shouldn't criticize others very often.

B. one should look at others through his dirty windows.

C. one should often keep his windows clean.

D. one should judge himself before he judges others.

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