试题与答案

脱丙烷塔按用途应为（）。A、分馏塔 B、吸收解吸塔 C、抽提塔 D、洗涤塔

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题型：单项选择题

题目：

脱丙烷塔按用途应为（）。

A、分馏塔

B、吸收解吸塔

C、抽提塔

D、洗涤塔

答案：

参考答案：A

考点：气体分馏装置操作工中级气体分馏装置操作工中级气体分馏装置操作工题库
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题型：填空题

阅读理解。

    We know the mosquito (蚊子) very well. Mosquitoes fly everywhere. They can be found almost all

over the world, and there are more than 2,500 kinds of them.    

     No one likes the mosquito. But the mosquito may decide that she loves you. She? Yes, she. It's true

that the male mosquito doesn't bite (咬) and only the female mosquito bites because she needs blood to

lay eggs. She is always looking for things or people she wants to bite. If she likes what she finds, she

bites. But if she doesn't like your blood, she will turn to someone else for more delicious blood. Next

time a mosquito bites you, just remember you are chosen. You're different from the other people!    

     If the mosquito likes you, she lands on your body without letting you know. She bites you so quickly

and quietly that you may not feel anything different. After she bites, you will have an itch on your body

because she puts something from her mouth together with your blood. By the time the itching begins, she

has flown away.  

     And then what happens? Well, after her delicious dinner, the mosquito feels tired. She just wants to

find a place to have a good rest. There, on a leaf or a wall, she begins to lay eggs, hundreds of eggs.

1. "itch" means ______ in Chinese.

A. 叫声  

B. 麻木  

C. 剧痛  

D. 痒

2. How many kinds of mosquitoes are there in the world?             

A. There are 2,500 kinds of them.    

B. There are more than 2,500 kinds of them.    

C. There are many kinds of them.    

D. There are less than 2,500 kinds of them.

3. "But the mosquito may decide that she loves you." "she" refers  to (指的是) ______.

A. the male mosquito         

B. the young mosquito    

C. the old mosquito          

D. the female mosquito

4. The mosquito is always looking for ______.   

A. people she dislikes    

B. things or people she doesn't want to bite    

C. things or people she wants to bite    

D. animals she doesn't want to bite

5. Which of the following sentences is true?  

A. The itching begins before the mosquito bites you.    

B. Mosquitoes need blood to lay eggs.    

C. You feel terrible when the mosquito bites you.    

D. All the mosquitoes like to bite people for blood.

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