试题与答案

液硫捕集器捕集效率可达()以上,尾气中硫含量约为0.56g/m3。A、95% B、9

题型:单项选择题

题目:

液硫捕集器捕集效率可达()以上,尾气中硫含量约为0.56g/m3

A、95%

B、97%

C、98%

D、99%

答案:

参考答案:B

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题型:阅读理解

阅读理解

     Are some people born clever, and others born stupid? Or is intelligence developed by our

environment and our experience? Strangely enough, the answer to these questions is yes. To

some extent our intelligence is given to us at birth, and no amount of education can make a genius

out of a child born with low intelligence. On the other hand, a child who lives in a boring environment

will develop his intelligence less than one who lives in rich and varied surroundings. Thus the limits

of person's intelligence are fixed at birth, whether or not he reaches those limits will depend on his

environment. This view, now held by most experts, can be supported in a number of ways.

      It is easy to show that intelligence is to some extent something we are born with. The closer the

blood relationship between two people, the closer they are likely to be intelligence. Thus if we take

two unrelated people at random from population, it is likely that their degree of intelligence will be

completely different. If, on the other hand, we take two identical twins, they will very likely be as

intelligent as each other. Relations like brothers and sisters, parents and children, usually have similar

intelligence, and this clearly suggests that intelligence depends on birth.

      Imagine now that we take two identical twins and put them in different environments. We might

send one, for example, to a university and the other to a factory where the work is boring. We would

soon find differences in intelligence developing, and this indicates that environment as well as birth

plays a part. This conclusion is also suggested by the fact that people who live in close contact with

each other, but who are not related at all are likely to have similar degree of intelligence.

1. The writer is in favor of the view that man's intelligence is given to him________.

A. at birth                            

B. through education

C. both at birth and through education      

D. neither at birth nor through education

2. If a child is born with low intelligence, he can_________.

A. become a genius

B. still become a genius if he should be given special education

C. not reach his intelligence in his life.

D. reach his intelligence limits in rich surroundings

3. The example of the twins going to a university and to a factory separately shows_________.

A. the importance of their intelligence    

B. the role of environment on intelligence

C. the importance of their positions      

D. the part that birth plays

4. The best title of the passage can be _________.

A. Surroundings    

B. Effect of education

C. Dependence on Environment    

D. Intelligence

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题型:单项选择题

假定轴棒生产线上,要对轴棒长度进行检测。假定轴棒长度的分布是对称的(不一定是正态分布),分布中心与轴棒长度目标重合。对于100根轴棒,将超过目标长度者记为“+”号,将小于目标长度者记为“-”号。记N+为出现正号个数总和,则N+的分布近似为().

A.(40,60)间的均匀分布。

B.(45,55)间的均匀分布。

C.均值为50,标准差为10的正态分布。

D.均值为50,标准差为5的正态分布。

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