问题 问答题

按配合比计算,砂浆搅拌机每拌一次需加入黄砂148kg,若现场黄砂的含水率为3%。试问:湿砂用量应是多少(精确至千克)

答案

参考答案:湿砂用量148×(1+3%)=152(kg)

阅读理解

阅读理解。

     Many people like to travel by plane because it's fast, 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 window. You can't choose the food.

     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.  But 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.

根据短文内容,选择正确答案。

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

A. Because it is fast.

B. Because it is saf'e.

C. Because you can walk around in the plane.

D. Because you can open the door.

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 see many funny things.

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

A. A bus.            

B. A bike.

C. A train.            

D. A car.

4. What is the bad thing about the car travel?

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. The cars are too expensive.

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

A. He thinks it takes a lot of time to get to the airport and wait for a plane.

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 doesn't like the plane or the train.

多项选择题