问题 单项选择题

某桥总宽度30m,桥墩两侧承受不等跨径的结构:一侧为16m跨预应力混凝土空心板,最大恒载作用下设计总支座反力为3000kN,支座中心至墩中心距离为270mm;另一侧为20m跨预应力混凝土小箱梁,最大恒载作用下设计总支座反力为3400kN,支座中心至墩中心距离为340mm。如图1-7-24所示。墩身为双柱式结构,盖梁顶宽1700mm。基础为双排钻孔灌注桩。为了使墩身和桩基在恒载作用下的受力尽量均匀,拟采用支座调偏措施。试问,两跨的最合理调偏法应为下列何项所示?提示:其他作用于中墩的外力略去不计。()

A.16m跨向跨径方向调偏110mm 

B.16m跨向跨径方向调偏150mm 

C.20m跨向墩中心调偏100mm 

D.20m跨向墩中心调偏50mm

答案

参考答案:A

阅读理解

阅读理解。

     A recent(最近的)report from Dazhou Daily says about 18% of Dazhou teenagers can have problems with their minds(内心,精神).Some students  become  worried  because they have to  study very hard.

Others find it difficult to get on well with people like their parents and classmates.

     Zhang Qiang, a Junior 2 student from Dazhou, could not understand his teachers in class and was doing badly  in his lessons.He was afraid of exams.When he looked  at the exam paper,  he couldn't think of

anything to write.

     Another student,  a 15-year-old girl called  Wu Yan from  Guang'an  often argued with her classmates

even her parents because of some different ideas.She became so annoyed about them that she started to hurt herself with a knife.

     However, many  students who have problems won't  go for advice or help.Some think they will  look

stupid(愚蠢的)  if they  go to see a doctor.Others  don't  want to talk about their secrets.In  order  to

solve the teenagers' problems, here is some advice:

● Talk to your parents or teachers often.

● Take part in group activities and play sports.

● Go to see a doctor if you feel unhappy or unwell.

1.It is reported that _______  students in Dazhou can have problems with theirminds.

A.most          

B.many          

C.some          

D.all the

2.From the passage we know teenagers have problems with their minds because of _______

A.their study        

B.getting on with other people

C.their hobbies        

D.A and B.

3.Wu Yan started to hurt herself with a knife because ___________   

A.she couldn't get on well with her classmates and even her parents

B.she could not understand her teachers in class

C.she was afraid of exams

D.she had no money for a new shirt

4.Why don't the students who have problems want to go for help?

A.Because they think no one will help them.

B.Because they don't want to talk about their secrets and they think it's stupid to see a doctor.

C.Because they think they can solve the problems by themselves.

D.Because they think the doctors could do nothing with their problems.

5.How many pieces of advice are given to the teenagers who have problems in this passage?

A.Two.      

B.Three.      

C.Four.      

D.Five.

问答题 简答题