问题 单项选择题

某厂房的纵向天窗宽8m、高4m,采用彩色压型钢板屋面、冷弯型钢檩条;天窗架、檩条、拉条、撑杆和天窗上弦水平支撑局部布置简图如图9-11(a)所示;天窗两侧的垂直支撑如图9-11(b)所示;工程中通常采用的三种形式天窗架的结构简图分别如图9-11(c)、(d)、(e)所示。所有构件均采用Q235钢,手工焊接时使用E43型焊条,要求焊缝质量等级为二级。

在图9-11(e)中,立柱的最大弯矩设计值M=30.2kN·m时,轴心压力设计值N=29.6kN,采用热轧H型钢H194×150×6×9,A=3976mm,W=283×10mm,i=83mm,i=35.7mm。作为压弯构件,试问,当对弯矩作用平面外的稳定性计算时,构件上最大压应力设计值(N/mm),与下列何项数值最为接近?()

A.171.3

B.180.6

C.205.9

D.151.4

答案

参考答案:D

单项选择题
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.

小题1:Which country does the author live in now?

A.India.

B.Canada.

C.Belgium.

D.Germany.小题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.小题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 were by air.

C.They traveled in spring that year.

D.They stayed in Europe for nearly two months.小题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小题5:The underlined word “sombre” in the 4th paragraph probably means “________”.

A.happy

B.sad

C.angry

D.enjoyable