为什么反渗透对原水预处理质量要求特别高?

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问题:

为什么反渗透对原水预处理质量要求特别高?

考点:纯水制作工高级纯水制作工高级纯水制作工题库
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阅读理解。

     It was Sports Day at School. There were many races. Lots of parents were watching the children.

    There was a large crowd of people. Some girls were talking about the races. They were talking about who

win the 100-metre race. Jone heard what the girls were talking about. He was eating a banana. He said,"I shall

win the race! I am the fastest runner!" When he finished his banana, he throw the skin on the ground, and left.

     Mr Sun shouted,"100-metre race for boys!" Jone and the other boys went to the start of the race. The boys were ready now. Mr Sun held up a gun. He fired the gun into the air, and the race started. Jone ran very fast.

He was near the end of the race. He was smiling, but suddenly, he put one foot on the banana skin.He slipped

and fell down. He fell in front of Sam. Sam fell down, too. Then Ben fell down. Paul was behind them. He

passed them carefully and ran on. At last Paul won the race.

     "Congratulations, Paul," said Miss Smith. "You are the winner."

1. Some girls were talking about the ________.

A. 100-metre race

B. 200-metre race

C. 800-metre race

D. 1000-metre race

2. Jone threw the skin on the ground when he finished the ________.

A. orange

B. banana

C. apple

D. pear

3. Who won the race finally?

A. Sam

B. Jone

C. Ben

D. Paul

4. How many people fell down?

A. One

B. Two

C. Three

D. Four

5. What do you think the passage most probably is?

A. A newspaper report

B. A novel

C. A student's composition

D. A TV play

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SCS—50中后一个S表示的含义是().

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主要在商品房销售代理业务中存在的环节是( )。

A.房地产交验

B.业务开拓

C.方案设计与推广

D.撮合成交

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将铁片放入硫酸铜溶液中,你会看到的现象为______、

______;该反应的方程式为______.

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企业面向2l世纪国际市场的五大战略包括()

A.人才开发战略

B.技术开发战略

C.信息开发战略

D.知识生产战略

E.国际化战略

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