在模拟量控制线中，由于模拟量信号的抗干扰能力较差，因为必须采

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问题填空题

在模拟量控制线中，由于模拟量信号的抗干扰能力较差，因为必须采用（），在连接时，屏蔽层靠近变频器一侧应接变频器的（），另一端应（）。

答案

参考答案：屏蔽线；公共端；悬空

阅读理解

阅读理解。

Betty is an American girl. She is thirteen. She is in Beijing with her parents. She doesn't know much

Chinese. She can't speak Chinese well. Sometimes her friends don't understand (理解) her.

It's Sunday morning. She's going to the zoo to see the pandas. She's waiting at the bus stop. At the

bus stop she asks a Chinese boy how to go to the zoo. But the boy can't understand her. Then she takes

out a pen and some paper. She draws a panda on it and shows the picture to the boy. The boy smiles

and then shows her the way to the zoo.

1. Betty is in Beijing with her ____.

A. brother

B. sister

C. mother

D. father and mother

2. She can speak ____ Chinese.

A. much

B. little

C. any

D. not

3. She is going to the zoo ____.

A. by bike

B. by bus

C. by train

D. on foot

4. She's going to the zoo to ____.

A. see her friends

B. see tigers

C. see monkeys

D. see pandas

5. The boy ____.

A. shows her the way to the zoo

B. doesn't know the way

C. goes to the zoo with her

D. gives a map to her

名词解释

婚姻家庭法