问题 单项选择题

如图(a)所示为某钢筋混凝土高层框架结构的—榀框架,抗震等级为二级,底部一、二层梁截面高度为0.6m,柱截面为0.6m×0.6m。已知在重力荷载和地震作用组合下,内力调整前节点B和柱DB、梁BC的弯矩设计值(kN·m)如图(b)所示。柱DB的轴压比为0.75。

假定柱AE在重力荷载和地震作用组合下,柱上、下端的弯矩设计值分别为。试问,抗震设计时,柱AE端部截面的剪力设计值(kN),与下列何项数值最为接近()

A.161

B.171

C.186

D.201

答案

参考答案:D

解析:

根据《高层建筑混凝土结构技术规程》6.2.3条:

=1.3×(298+306)/(4.5-0.6)=201.3kN

阅读理解

阅读理解

     As a boy growing up in India, I had longed to travel abroad.I used to listen to the stories my father

would tell me about his stay in Canada and tours to Europe in the 1970s, with great interest.

My big moment finally came in the summer of 1998 when I was able to accompany my parents to

Europe, where my father was to attend a meeting.We planned to travel to Belgium, Netherlands and

West Germany.

     I have vivid memories even today of going to Mumbai airport at night all excited about finally going

abroad.I had heard several great things about Lufthansa till then but now I finally got to experience them

first hand, during the flight to Frankfurt.We flew business class and even today I can remember the

excellent service by the Lufthansa crew.The flight was really smooth and thoroughly enjoyable, even for

someone like me, who is otherwise scared of flying.

     After spending almost two weeks in Europe, we took the Lufthansa airport express from Dusseldorf

to Frankfurt airport, for our return flight.What a journey that was! All along the Rhine (莱茵河), it was

simply an unforgettable experience.I was in a sombre mood on the flight back to Mumbai as it marked

the end of a wonderful vacation, but the Lufthansa crew members were able to change it into a most

enjoyable experience yet again, with the quality of their service.

     Being the first airline to take me overseas, Lufthansa will always hold a special place in my heart.Even

today, I continue to enjoy flights on Lufthansa and simply cannot dream of choosing any other airline.

Flying, in general, for me, has always been an ordeal (terrible and painful experience). Flying on

Lufthansa, however, is something I always have and always will look forward to.

1. Which country does the author live in now?

A. India.  

B. Canada.

C. Belgium.  

D. Germany.

2. What made the author so interested in traveling abroad?

A. Growing up in India.

B. Once staying in Canada.

C. Once traveling to Canada with his father.

D. His father's stories about his traveling experiences.

3. Which of the following is TRUE about the author's trip to Europe in 1998?

A. The author traveled with one of his parents.

B. Both their going and return are by air.

C. They traveled in spring that year.

D. They stayed in Europe for nearly two months.

4. It can be inferred from the passage that Lufthansa is ________.

A. a city in India  

B. a city in Europe

C. an airline company  

D. a travel agency

5. The underlined word "sombre" in the 4th paragraph probably means "________".

A. happy  

B. sad

C. angry  

D. enjoyable

单项选择题 A型题