问题 单项选择题

我国钢结构规范对于轴心受压构件给出的四条柱曲线,其中正确的是()。

A.a类属于外侧残余应力的峰值较小而i/p值也较小的构件

B.b类属于外侧残余应力的峰值较小而i/p值也较小的构件

C.c类属于外侧残余应力的峰值较小而i/p值也较小的构件

D.d类属于外侧残余应力的峰值较小而i/p值也较小的构件

答案

参考答案:A

解析:

本题考点是掌握四类柱截面的符合条件,c类属于残余应力峰值较大而i/p值也较大的截面,b类截面介于两者之间,而对于翼缘厚度较大的焊接实腹式截面,当按绕弱轴计算时列为d类截面。

阅读理解

阅读理解。

    One day a few years ago, a very funny thing happened to a neighbor of mine. He is a teacher at one of

London's big medical schools. He had finished his teaching for the summer term and was at the airport on

his way to Russia to give a lecture.

    He had put a few clothes and his lecture notes in his shoulder bag, and he had put Rupert, the skeleton

(人体骨架) to be used in his lecture, in a large brown suitcase. At the airport desk, he suddenly thought

that he had forgotten to buy a newspaper. He left his suitcase near the desk and went over to the shop.

    When he got back, he discovered that someone had taken his suitcase by mistake. He often wonders

what they said when they got home and found Rupert.

1. Who wrote the story? [ ]

A. Rupert's teacher.

B. The neighbor's teacher.

C. A medical school teacher.

D. The teacher's neighbor.

2. Why did the teacher put a skeleton in his suitcase? [ ]

A. He needed it for the summer term in London.

B. He needed it for the lecture he was going to give.

C. He wanted to take it to Russia for medical research.

D. He wanted to take it home as he had finished his teaching.

3. What happened at the airport? [ ]

A. The skeleton went missing.

B. The skeleton was stolen.

C. The teacher forgot his suitcase.

D. The teacher took the wrong suitcase.

4. Which of the following best tells the teacher's feeling about the incident? [ ]

A. He was angry.

B. He thinks it very funny.

C. He feels helpless without Rupert.

D. He feels good without Rupert.

5. Which of the following might have happened afterwards? [ ]

A. The teacher got back the suitcase but not Rupert.

B. The teacher got back neither the suitcase nor Rupert.

C. The teacher got back Rupert but not the suitcase.

D. The teacher got back both the suitcase and Rupert.

单项选择题