问题 问答题 简答题

什么是土壤的抗陷系数P和土壤最大允许比压PO?

答案

参考答案:

机械在地面上行走使地面沉陷并压实,使地表土壤沉陷一厘米所需要的比压就是土壤的抗陷系数P。地面土壤被挤压而沉陷10~15厘米时所承受的比压,就是土壤的最大允许比压PO。

阅读理解

阅读理解。

     Long ago, people in Rome talked to one another in Latin (拉丁文). Pupils in school learned to read

  and write in Latin. Books are in Latin.

     Some Romans went to other parts of the world. They took their language with them. Soon Latin was

 used in many countries. It became a world language. People in other countries did not talk in Latin the

 same way. In each land, they made more changes. At last they did not talk in Latin any more. New

 languages had come from the old one.

     People don't talk to one another in Latin today, but they still use many Latin words. You do, too.

 Street, wall, city, and salt are some of the Latin words we use. You are a pupil in school. Pupil is a

 Latin word. It means "little doll."

1. Latin was used by people in _____ long ago.

    A. Rome          

    B. the United States  

    C. Greece        

    D. Texas

2. The word in the passage that means what people speak and write is _____ .

    A. maths        

    B. Chinese  

    C. English        

    D. language

3. Which of the following does this passage lead you to believe?

    A. It is not good to change a language.

    B. Most of people could read Latin many years ago.

    C. Many people can read Latin today.

    D. Pupils in schools today play with dolls.

4. What happened to Latin when it was taken to other countries at the beginning?

    A. In each land, they changed the language a little.

    B. In each land, they changed the language a lot.

    C. In each land, people t, dked about each other.

    D. In each land, the children had to speak some Latin.

5. The main idea of the whole passage is that

    A. people in old Rome talked a lot to each other.

    B. Romans did not like to stay at home.

    C. although Latin moved from land to land, it didn't change.

    D. Latin changed as it moved from land to land.

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