搜题请搜索小程序“爱下问搜题”
问题 问答题 简答题

为什么要对烟气进行预冷却？

答案

参考答案：

大多数含硫烟气的温度为120--185℃或更高，而吸收操作则要求在较低的温度下（60℃左右）进行，因为低温有利于吸收，而高温有利于解析。另外，高温烟气会损坏吸收塔防腐层或其他设备。因此，必须对烟气进行预冷却。

选择题

— How many ____________ make a triangle?

— Three.[ ]

A. lines

B. line

C. a line
查看答案
改错题
短文改错。
At your school, who usually makes the decision to punish the 
student who is found cheat in an exam or getting into a fight? 
"The school authority, of course!" You would probably say. And 
in the No. 10 Middle School, a special student committee has the finally say. 
Wang Wei, who was made the president of the committee, told us 
that his school encouraged self-education and self-management
between 
students. The committee deals with students who break away school
rules. And it 
will collect opinions from the people concerned before handing
out a formal opinion to the school 
authority. In most case, the school authority follows their opinions in
the end. In this way students who are 
in charge of the committee feel more happy and free. 







1. _____
2. _____
3. _____
4. _____
5. _____

6. _____

7. _____

8. _____
 
9. _____                          
10. _____
查看答案