在500kV电力线附近组塔时，起重机应接地良好。起重机及吊件、牵

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问题单项选择题

在500kV电力线附近组塔时，起重机应接地良好。起重机及吊件、牵引绳索和拉绳与带电体的最小安全距离，沿垂直方向8.5m，沿水平方向（）m。

A.9

B.8.5

C.8

D.7.5

答案

参考答案：C

阅读理解

阅读理解。

The sun is very bright (明亮的). Light (光) from the sun helps us see things Its light also makes

our green grass and trees grow.

The sun is very hot. It makes air warm. Then we are warm.

When the day is over, the sun goes down (落下). It is night. But the next day the sun comes up

(升起). It is bright again. A new day begins.

1. Sunlight makes grass and trees .

A. fall down

B. turn cold

C. glow

2. You can tell that nights are than days.

A. better

B. longer

C. colder

3. This article (文章) tells about .

A. the sun

B. playing outside

C. the dark night

4. When the day is over the sun _____.

A. comes up

B. goes down

C. gets brighter

5. The sun makes air .

A. warm

B. cold

C. hot

名词解释

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