搜题请搜索小程序“爱下问搜题”
问题 多项选择题

紧急停车后，甲烷化反应器的处理方法正确的有（）。

A．停干氢外送

B．停湿氢外送

C．停甲烷化反应器进料

D．视情况进行氮气置换

答案

参考答案：A, B, C, D

填空题

请根据句意及首字母补全单词。

1. I want to read.I'm glad to be a_____.

2. There is a s_____ chair in the front of our class.

3. Donny has a m_____ plane.

4. My f_____ activity is playing football.

5. This dress is very e_____. I can't afford it.
查看答案
单项选择题

________get older, the games they play become increasingly complex.

A．Children

B．Children, when they

C．As children

D．For children to
查看答案