问题 问答题 简答题

什么叫排架结构?它的特点是什么?

答案

参考答案:

排架结构是由屋盖结构(包括屋面板、屋面梁或屋架)、柱及基础等组成。排架结构的主要特征是把屋架看成为一个刚度很大的横梁。屋架(屋面梁)与柱子的连接为铰接,柱子与基础的连接为刚接。

阅读理解

阅读理解。

     There was a man who had a little boy that he loved very much. Every day after work the man would come

home and play with the little boy. He would always spend all of his spare time playing with the little boy.

     One day, while the man was at work, he realized that he had extra work to do for the evening, and that he

wouldn't be able to play with his little boy. But, he wanted to be able to give the boy something to keep him

busy. So, looking around his office, he saw a magazine with a large map of the world on the cover. He got an

idea. He removed the map, and then patiently tore it up into small pieces. Then he put all the pieces in his coat

pocket.

     When he got home, the little boy came running to him and was ready to play. The man explained that he

had extra work to do and couldn' t play with him, but he led the little boy into the dining room. He took out all

the pieces of the map and spread them on the table. He explained that it was a map of the world, and that by

the time he put it back together, his extra work would be finished and they could both play. Surely this would

keep the child busy for hours, he thought.

     About half an hour later the boy came to the man and said, "Okay, it's finished. Can we play now?" The

man was surprised, saying, "That' s impossible. Let's go and see." And sure enough, there was the picture of

the world; all put together, every piece in its place.

     The man said, "That's amazing! How did you do that?" the boy said, "it was simple. On the back of the

page was a picture of a man. When I put the man together, the whole world fell into place."

1. The man told his son to put a map back together because _____. 

A. he had little time to play with his son

B. he was tired of playing with his son

C. he had to overwork in the office

D. he wanted his son to play alone

2. The son spent _____ putting the map back together.

A thirty minutes

B. several hours

C. the whole evening

D. the whole day

3. What can you infer from this story?

A. Children often make adults mad.

B. Adults know little about children.

C. Sometimes children surprise adults.

D. Adults always care for their children.

名词解释