问题 单项选择题

某厂新建#1机组在2007年全年发生第一类非计划停运2次,累计25小时;第二类非计划停运3次,累计80小时;第四类非计划停运1次,120小时。该机组全年强迫停运系数是()。

A、0.29%

B、1.20%

C、2.57%

D、0.43%

答案

参考答案:B

阅读理解

It is over 40 years since first atomic bomb was dropped on a major city in Japan. Yet even now its effects are showing themselves and may continue to do so for years to come. Much effort and human energy have been used to try to prevent such a terrifying thing from happening again. So far there is no guarantee that it will not. Countries which already possess nuclear knowledge and resources have bombs stored away which are powerful enough to wipe out all life on earth. But this is not all. Other countries, which previously were not so advanced in technology, are gradually buying materials that can be used for making atomic devices. This nuclear energy will naturally be of great value in helping the economy of poorer nations.

The generation of electricity through nuclear power came directly from the original work on the atom bomb. Because of the increase in demand for energy and the possibility of decreasing supplies of oil and natural gas, the interest in electricity has increased. One of the by-products of nuclear power stations is plutonium (钸) produced from unclear fuel: plutonium is ingredient (成分) in bomb-making. It means that there are far more opportunities for the manufacture of bombs.

This brings the problem to a full circle again. How can something so valuable and useful be controlled so that it works for the benefit and not the destruction of man?

9. The effects of dropping the first atomic bomb ________.

A. are not over                    B. may go on forever    

C. could last much longer            D. will not be over in the near future

10. The writer says that enough atomic bombs have already been manufactured to ________.

A. wipe out Japan                  B. last forever    

C. act as a peace-keeping device      D. destroy all living things

11. The advantage of less developed countries being able to make atomic devices is that it ______.

A. gives them more opportunities for work     B. will help poor countries to become richer

C. will enable them to make better explosives   D. will be of great value to them

12. The second paragraph tells us that the increased demand for electricity today ________.

A. has led to the decrease in supplies of oil

B. means that more countries are interested in nuclear power

C. has increased the risk of accidental explosions

D. has increased the very means of producing more atomic bombs

阅读理解

阅读理解。

     People realize that, although animals may not have the same intelligence as human beings, they are clever

enough to learn certain things.

     Dogs are extremely useful as companions for blind people. When a dog has been properly trained, he will

always lead his blind master (主人) in the right direction and keep him out of danger. For example, seeing-eye

dogs learn never to cross a busy road when cars are coming, even if their master ordered them to do so.

     Horses are also able to learn many things. Horses that are used for guard or police duty must learn never

to be frightened of noises and traffic. Racing horses are able to run much faster than other horses, but they

are also quite high strung (紧张). Therefore, it is necessary for those people who train them to be very patient

(耐心) and understanding.

     The movie and television can use trained animals too. Some animals, such as monkeys and foxes, are easy

to film. All you have to do is make a trail in front of the camera by putting something that smells good to the

animals over the ground. Big animals, such as lions and tigers, can be photographed as they come happily back

to their families or dinner. If a movie actor is nearby, the well-trained animal will pay no attention to him.

However, the audience may imagine that the actor escaped a terrible death.

1. Seeing-eye dogs have to learn the following except _____.[ ]

A. following the master's order anytime

B. leading their master in the right direction

C. keeping their master safe while leading the way

D. crossing a busy road at the proper time

2. What does "make a trail" mean here in the last paragraph? [ ]

A. place something to attract the animal

B. give the animal a certain task

C. order the animal to do things

D. follow the animal to hunt

3. Lions can be photographed easily when _____. [ ]

A. they are following a trail of something that smells good

B. they are returning to their families

C. they have been trained to work with other animals

D. they do not know a movie-actor is nearby

4. Which of the following statements is the main idea of the passage? [ ]

A. Dangerous wild animals can be trained.

B. Dogs can be trained to help blind people.

C. Animals can be trained to learn certain things.

D. Animals can become interested in learning.