问题 问答题 简答题

往复机试车注意事项的主要内容有哪些?

答案

参考答案:

①必须按操作规程启动机组,检查各部件有无异常;

②必须检查各轴承、滑道、气缸及填料(有油润滑压缩机)的润滑情况;

③检查各摩擦部位的温度在正常范围内;

④连续运行1~2小时后若无异常情况,即可停车做必要的检查。

阅读理解

阅读理解。

     Many people like to travel by plane, but I don't like it because an airport is usually far from the city.

You have to get there early and wait for hours for the plane to take off and it is often late. You can't

open the windows. You can't choose the food. Planes are fast, but they still take hours to go out of the

airport and into the city.

     I like traveling by train. I think trains are safe. Railway stations are usually in cities. When you are late

for a train, you can catch another one. You can walk around in the train and open the windows. You can

see many interesting things on your way. I know it takes a little more time. I also like cars. You can start

your journey when you want to, and you don't need to get to a railway station or a bus stop. Also you

can carry many things with you in a car. But sometimes there are too many cars on the road.

1. Why do many people like to travel by plane?

A. Because it is fast.

B. Because it is safe.

C. Because you can walk around in the plane.

D. Because it is cheap.

2. Which is not the good thing about the train?

A. It is safe.

B. It takes a little more time.

C. You can open the windows.

D. You can walk around in the train.

3. If you want to take a lot of things with you, what do you take to go out?

A. A bus.

B. A car.

C. A train.

D. A bike.

4. What is the bad thing about the car?

A. You needn't go to a station.

B. You can start your journey when you want to.

C. There are too many cars on the road.

D. You needn't go to a bus station.

5. What does the writer think of the plane, the train and the car?

A. He thinks it takes a lot of time to go to and get out of the airport.

B. He likes to take a train because it takes a little more time.

C. He likes to take a car because he has a car.

D. He likes to take a plane because it's fast.

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