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问题 多项选择题

管道工程由若干管路系统所组成，按其服务目的不同可分为两大类，即( )。

A．建筑设备工程管道系统

B．给水管道系统

C．排水管道系统

D．工业管道系统

答案

参考答案：D

选择题

根据句意和所给汉语提示，写出句中所缺短语的正确形式

1. She is very clever. She often helps me __________(想出)some good suggestions.

2. When was the Young Club __________(建立)?

3. The room is too dirty. It should be __________(打扫干净).

4. Your visit has __________(使高兴起来)the sick man.

5. Can you help me __________(分发) the books to the students?

6. We have to __________(推迟) the picnic because of the rain.

7. Please __________(写下) what the teacher said carefully.

8. I __________(打电话) my mother and tell her what I do every day.

9. She is __________(查找) the new words in the dictionary.

10. It's very cold today. Please __________(穿上) your coat.
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单项选择题

G01-30型割炬（）。

A、是一种等压式割炬

B、只能使用中压乙炔

C、可焊接1～6mm厚的钢板

D、可切割2～30mm厚的钢板
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