问题 单项选择题

在进行预应力筋张拉时,应采取( )控制张拉质量。

A.控制应力

B.控制伸长值

C.控制起拱度

D.A+B

答案

参考答案:D

解析: 钢绞线张拉采用张拉力和伸长值双重控制。钢绞线张拉时的控制应力,应以伸长值进行校核,实测伸长值与理论伸长值误差控制在土6%之内,若超出此范围应停止张拉。待查明原因,纠正后方可继续张拉。 参见《公路桥涵施工技术规范》(JTJ 041—2000)P71-74。

阅读理解

阅读理解。

     One morning more than thirty years ago, I entered the Track Kitchen, a restaurant where everyone from

the humblest (卑微的) to the most powerful came for breakfast. I noticed an empty chair next to an elderly,

unshaven man, who looked somewhat disheveled. He was wearing a worn-out hat and was alone. I asked if

I might join him. He agreed quietly and I sat down to have my breakfast.

     We cautiously began a conversation and spoke about a wide rang of things. We never introduced ourselves.

I was concerned that he might have no money and not be able to afford something to eat. So as I rose to go

back to the counter and buy a second cup of coffee, I asked,

     "May I get you something?"

     "A coffee would be nice."

     Then I bought him a cup of coffee, We talked more, and he accepted another cup of coffee. Finally, I rose

to leave, wished him well, and headed for the exit. At the door I met one of my friends. He asked,

     "How did you get to know Mr. Galbreath?"

     "Who?"

     "The man you were sitting with. He is chairman of the Board of Churchill Downs."

     I could hardly believe it. I was buying, offering a free breakfast, and feeling pity for one of the world's

richest and most powerful men!

     My few minutes with Mr. Galbreath changed my life. Now I try to treat everyone with respect, no matter

who I think they are, and to meet another human being with kindness and sincerity.

1. What does the underlined word "disheveled" mean? [ ]

A. Unfriendly.

B. Untidy.

C. Gentle.

D. Kind.

2. The author bought coffee for the old man because _____.[ ]

A. he thought the old man was poor

B. he wanted to start a conversation

C. he intended to show his politeness

D. he would like to thank the old man

3. How did the author probably feel after he talked with his friend? [ ]

A. Proud.

B. Pitiful.

C. Surprised.

D. Regretful.

4. What is the message mainly expressed in the story? [ ]

A. We should learn to be generous.

B. It is honorable to help those in need.

C. People in high positions are not like what we expect.

D. We should avoid judging people by their appearances.

填空题