问题 单项选择题

价值工程中的全寿命周期费用是指()

A.研究和生产全过程发生的全部成本 

B.从开始使用至报废过程中发生的费用总和 

C.产品存续期的总成本 

D.生产费用和使用费用之和

答案

参考答案:D

解析:全寿命周期是指产品或服务从用户提出需求开始,至满足用户需求为止的时期,经济寿命周期。若用C1表示生产费用、C2表示使用费用,则全寿命周期费用就是C1与C2之和。

阅读理解

阅读理解。

     The students were having their chemistry class. Miss Li was telling the children what water was like.

After that, she asked her students, "What's water?" No one spoke for a few minutes. Miss Li asked again. "Why don't you answer my question? Didn't I tell you what water is like?"

     Just then a boy put up his hand and said, "Miss Li, you told us that water has no color and no smell.

But where can we find Such kind of water? The water in the river behind my house is always black and it

has a bad smell. " Most of the children agreed with him.

     "I am sorry, children," said the teacher."Our water is getting dirtier and dirtier. That's a problem. "

1. The students were having their _______ class.

A. English                  

B. Chinese

C. chemistry                  

D. math

2. Miss Li was telling the children what          __was like.

A. water                    

B. air

C. earth                      

D. weather

3. A boy said, "The water in the river behind my house is always      ____  .

A. whit e                    

B. black

C. clean                    

D. clear

4. Most of the children _       __  the boy.

A. agreed with            

B. wrote to

C. heard from              

D. sent for

5.The water in the river has color and smell because it is getting         ___.

A. more and more        

B. less and less

C. cleaner and cleaner      

D. dirtier and dirtier

单项选择题