金属脚手架附近架空线路电压等级1000kV时，沿垂直方向安全距离应

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问题单项选择题

金属脚手架附近架空线路电压等级1000kV时，沿垂直方向安全距离应满足（）沿水平方向安全距离应满足（）。

A.13m；13m

B.13.5m；13m

C.13m；13.5m

D.13.5m；13.5m

答案

参考答案：A

填空题

在下列各句的空白处填入一个最恰当的单词。

1. Cao Chong had a good way to_____ the big heavy elephant.

2. The room is too_____ for six persons to live in.

3. Miss Li taught us a lot of useful _____ for example, agree in with other people.

4. Manatees are very huge. They are about l,000 _____.

5. In the zoo, animals have to live in small _____.

6. Parents should _____ their children to behave well.

7. There isn't enough _____ left for the cows. They'll be hungry.

8. He is _____. He always fights with others.

9. _____ can't grow in the desert because there is no water there.

10. My grandfather is about sixty years old and his hair has turned _____.

单项选择题

下列忌火煅的药物是

A．牡蛎

B．珍珠

C．朱砂

D．磁石

E．龙骨