问题 问答题

机组停机后,汽轮机因盘车装置故障,应遵循什么原则?

答案

参考答案:

因盘车装置故障或其它确实需要立即停用盘车的检修工作,中断盘车后,在转子上的相应位置做好记号并记住停止盘车时间,每隔30分钟转动转子180度(调节级及中压第一级静叶持环温度大于等于400摄氏度时,应每隔15分钟转动转子180度),当盘车装置恢复使用时,在最后一次转动转子180度且停留原间隔时间的一半后,再投入盘车装置,并检查转子偏心度及盘车电机电流、机内声音应正常。

阅读理解

阅读理解

     Nobody has ever succeeded in their attempt to stay young and live a very long life.   1   But is this

really true?

     Dr Aubrey de Grey thinks that we can stop people getting old and that in about 20 years, people

will be able to live to be 1,000 years old!  2  

     In Dr Grey's opinion, getting old is a problem that can be solved.  3    If we can cure this disease,

we can stop the aging process.We can also make people have young bodies again.

     Dr Grey believes that science will soon be able to stop the causes of aging so that a person's body

won't get weak and won't suffer from the typical diseases of old age.

     Dr Grey compares the human body to a house.As the house gets older, some things must be

repaired.Broken hearts must be replaced.The same thing can happen with the human body, he thinks.

We can use stem cell technology to grow new, healthy tissue to replace the old, damaged one.We can

also try to remove diseasecausing molecules in our bodies._5_.

      6    However, they admit that Dr Grey's ideas have not yet been proved wrong.Dr Grey is

convinced that his opinions are realistic and that his research is very important.If aging is a disease, he

says, we must try to cure it.

A. At the same time, people's bodies will stay young and healthy.

B. Scientists succeeded in solving the problem of aging long ago.

C. A lot of scientists think his ideas not realistic.

D. When our bodies change as we get older, this is like a disease.

E. New deadly diseases may also be cured, if we can stop the aging process.

F. It seems that everybody must get old and die.

G. In this way, a person could easily live to be 1,000 years old.

单项选择题