问题 多项选择题

离心机日常使用的维护包括()

A.每隔三个月对主机校正一次水平度

B.每使用5亿转处理真空油泵一次

C.每使用1500小时,应清洗驱动部位轴承并加上高速润滑油

D.转轴与转头结合部应经常涂酯防锈

E.平时不用时,应每月低速开机1~2次,每次0.5小时,保证各部位的正常运转

答案

参考答案:A, B, C, D, E

阅读理解

Ten years ago I used to be very fit. I rode a bike to work and I got a lot of exercise at weekends. I used to play tennis a lot and go for long walks. In those days I didn’t earn very much. I had a job in an office. It wasn’t a very good job but I had a lot of time to do the things I enjoyed doing.

Then, about eight years ago, I got a much better job. The pay was better, but the hours were a lot longer. I bought a car and drove to work every day. I began to take people out to lunch. And I began to put on weight, too. I stopped playing tennis and going for long walks at weekends because I just didn’t have any time for things like that any more.

There’s a lot of stress in my job. Perhaps that’s why I started drinking more than I used to. For example, I used to have only half a glass of whisky when I got home, but then I started filling my glass to the top, and instead of having one glass, I would have several. I started smoking a lot, too. I never used to smoke at all.

Two months ago I had a heart attack. At first I just couldn’t believe it. Luckily it wasn’t very serious. The doctor advised me to stop smoking and to eat less. He also advised me to work less and get more exercise. But I just haven’t any time! My job takes everything out of me!

Sometimes I wonder if I should get another job. Perhaps I could do something as I used to. But if I do that, I won’t earn as much. I have a family to support. I have to think of them, too. I just don’t know what I should do. What do you think?

小题1:Compared with ten years ago, what is worse for the author now?

A.His job.

B.His pay.

C.His means of transport.

D.His health.小题2:According to the passage, when the author got the better job, which of the following is NOT true?

A.He got higher pay.

B.His working hours weren’t long.

C.He found it very stressful.

D.He had little free time at weekends.小题3:After the author had a heart attack, the doctor advised him ____________.

A.not to work any longer

B.to take a long vacation abroad

C.to stop smoking and take exercise

D.not to eat out any more小题4:What can we learn about the author?

A.The author is not sure what he should do now.

B.The author has taken the doctor’s advice already.

C.The author has got another new job.

D.The author feels much better now.

填空题