问题 问答题 简答题

什么是硫酸“两转两吸”工艺的“3+2”流程?

答案

参考答案:二氧化硫氧化工艺中,氧化速度和转化率随温度的走势是相反的,为了在一定生产强度下保持转化率,就必须分段反应,但纵使这样转化率也不能达到99%,所以工业上采用分段转化后的炉气进入吸收工段,然后再进行下一个转化器,第二转化器出炉气体,进入第二吸收塔。这种二次转化,二次吸收的工艺就是所谓的二转二吸工艺,该工艺中第一次转化分三段温度反应,第二次转化分二段温度反应的流程就是“3+2”流程。

阅读理解

阅读理解。

     The poor are very wonderful people. One evening we went out and we picked up four people

from the street. And one of them was in a most terrible condition-and I told the sisters: You take

care of the other three. I take care of this one who looked worse. So I did for her all that my love

can do. I put her in bed, and there was such a beautiful smile on her face. She took hold of my hand

as she said just the words "Thank you" and she died.

      I could not help but examine my conscience before her and I asked what I would say if I was

in her place. And my answer was very simple. I would have tried to draw a little attention to myself.

I would have said I am hungry, I am dying, I am cold, I am in pain, or something, but she gave me

much more-she gave me her grateful love. And she died with a smile on her face. So did that man

whom we picked up from the drain, half eaten with worms, and we brought him to the home. "I have

lived like an animal in the street, but I am going to die like an angel, loved and cared for," he said at

the end. And it was so wonderful to see the greatness of that man who could speak like that, who

could die like that without blaming anybody, without cursing anybody, without comparing anything.

Like an angel-this is the greatness of our people. And that is why we believe what Jesus has said: I

was hungry, I was naked, I was homeless, I was unwanted, unloved, uncared for, and you did it to

     And with this prize that I received as a Prize of Peace, I am going to try to make the home for

many people who have no home. Because I believe that love begins at home and if we can create

a home for the poor I think that more and more love will spread. And we will be able through this

understanding love to bring peace, the good news to the poor, the poor in our own family first, in

our country and in the world. When I pick up a person from the street, hungry and I give him a plate

of rice or a piece of bread, I am satisfied. I have removed that hunger. But to a person who is shut

out, who feels unwanted, unloved, terrified, who has been thrown out from society, that poverty is so

full of hurt and so unbearable... And so let us always meet each other with a smile, for the smile is the

beginning of love, and once we begin to love each other naturally we want to do something.

1. What can be learned from the second paragraph?

A. The woman should have paid more attention to herself.

B. The man couldn't blame anyone.

C. The author is religious.

D. The man died in the street.

2. The purpose of this passage is ________. 

A. to appeal for more donation for the poor

B. to call on the public to love each other

C. to tell the readers the poor are wonderful

D. to express how moved the author is to receive the prize

3. Which of the following can NOT be inferred from the passage?  

A. The author has few supporters.

B. The author was somewhat surprised at what the man said.

C. The author is delighted to help others in trouble.

D. The author may agree to solve social problems in soft ways.

4. What's the best title of this passage? 

A. Have Sympathy for the Poor

B. The Poor Are Wonderful

C. Smile and Love

D. Relieve Poverty

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