问题 单项选择题

施工现场临时用电工程的定期检查应复测()。

A.对地绝缘值 

B.接地电流值 

C.对地放电值 

D.接地电阻值

答案

参考答案:D

解析:施工现场临时用电工程定期检查的规定为:(1)施工现场每月一次,基层公司每季一次;(2)基层公司检查时,应复测接地电阻值。考点 《中华人民共和国电力法》

阅读理解

阅读理解。

     In 1826 a Frenchman named Niepce needed pictures for his business.  But he was not a good

artist.  So he invented a very simple camera soon.  He put it in a window of his house find took a picture

of his garden. That was the first photo.

    The next important day in the history of photography was in 1837.  In that year, Daguerre, another

Frenchman, took a picture of his reading room.  He used a new kind of camera in a different way.  In his

pictures you could see everything very clearly,  even the smallest thing.  This new way of taking photos

was called Daguerreotype.

    Soon, other people began to use Daguerre's way. Travelers brought back wonderful photos from all

around the world, and people took pictures of famous buildings, cities and mountains. In about 1840,

photography was developed. Then photographers could take pictures of people and moving things. That

was not simple. The photographers had to carry a lot of films(胶卷)and other machines.  But this did not

stop them.  For example, some in the United States worked so hard.

    Mathew Brady was a famous American photographer.  He took many pictures of great people. The

pictures were unusual because they were very lifelike.

    Photography also became one kind of art by the end of the 19th century. Some photos were not just

copies of the real world.  They showed feelings, like other kinds of art.

1.  The first photo taken by Niepee was a picture of_____.   

A. his business    

B.  his house    

C.  his garden

2. The Daguerreotype was_____ .   

A. a Frenchman

B. a way of taking photos

C. a kind of camera

3.  If a photographer wanted to take pictures of moving things in the year of 1840, he had to_____ .  

A. watch lots of films      

B. buy an expensive camera

C. take many films and something else with him

4.  Mathew Brady was good at taking photos of_____.    

A. great people    

B.  animals    

C. plants

5. This passage tells us_____.

A. how photography was developed

B. how camera was invented

C. how to take pictures in the world

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