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问题 多项选择题

进行配电设备停电作业，应断开可能送电到待检修设备、配电变压器各侧的所有线路的（包括用户线路）（），并验电、接地后，才能进行工作。

A.断路器

B.隔离开关

C.熔断器

D.避雷器

答案

参考答案：A, B, C

阅读理解

Two little children come to a big city. Their names are Mike and Bob. They live with their father and mother. Their family is very rich. They have a driver and lots of servants. Mike and Bob are going to a new school. Their father says to them, “Mike and Bob, don’t say we are rich at school.”

So they go to school. Their teacher says, “Hi, boys and girls. Today we write a composition about your family. “ So all the children write something about their families. This is Mike’s composition.

“My name is Mike. My family is poor. My father and my mother are poor. Our driver is very poor and all the servants are very poor. “

阅读短文， 选择最佳答案。

小题1:There are _________ people in Mike’s family.

A．three

B．four

C．seven

D．two小题2:Their family is _________.

A．rich

B．poor

C．in a school

D．in the country小题3:They have _________.

A．a driver

B．some servants

C．two sisters

D．Both A and B小题4: The teacher asks the children to write a composition about _________.

A．their school

B．their friends

C．their families

D．their life小题5:Did Mike say they are rich?

A．Yes, he did.

B．No, he didn’t.

C．Yes, he was.

D．No, he wasn’t.
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单项选择题

滚筒式扫描仪大多数采用CIS技术，光学分辨率为300 dpi，有彩色和灰度两种，彩色类型一般为()位彩色。

A．16

B．24

C．32

D．64
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