问题 问答题

简述用贝克曼梁进行路基路面回弹弯沉试验的现场测试步骤。

答案

参考答案:

解析:①在测试路段布置测点,测点应在路面行车道的轮迹带上,并将白油漆或粉笔划上标记。
②将试验车后轮轮隙对准测点后约3~5cm位置上。
③将弯沉仪插入汽车后轮之间的缝隙处,与汽车方向一致,梁臂不得碰到轮胎,弯沉仪测头置于测点上,安装百分表于弯沉仪的测定杆上。
④测定者吹哨发令指挥汽车缓缓前行,百分表随路面变形的增加而持续向前转动。当表针转动到最大值时迅速读取初读数L1。汽车继续前行,表针反向回转,待汽车驶出弯;冗影响半径后,指挥汽车停止。读取稳定后的表针的读数L2。初读数L1与终读数L2之差的2倍即为该点的弯沉值。

阅读理解

阅读理解

     When it comes to friends, I desire those who will share my happiness , who possess wings of their

own and who will fly with me. I seek friends whose qualities illuminate (照亮) me and train me up for

love. It is for these people that I reserve the glowing hours , too good not to share.

     When I was in the eighth grade.l had a friend. We were shy and "too serious" about our studies

when it was becoming fashionable with our classmates to learn acceptable social behaviors. We said

little at school,but she would come to my house and we would sit down with pencils and  paper , and

one of us  would  say , " Let's start with a train whistle today. " We would sit quietly together and write

separate poems or stories that grew out of a train whistle. Then we would read them aloud. At the end

of that school year,we, too, were changed into social creatures and the

stories and poems stopped.

     When I lived for a time in London,l had a friend. He was in despair (失望) and I was in despair. But

our friendship was based on the idea in each of us that we would be sorry later if we did not explore this

great city because we had felt bad at the time. We met every Sunday for five weeks and found many

excellent things. We walked until our despairs disappeared and then we parted.We gave London to each

other.

     For almost four years I have had a remarkable friend whose ilnagination illuminates mine. We write

long letters in which we often discover our strangest selves. Each of us appears,sometimes in a funny way,

in  the other's  dreams. She and I agree that, at certain times,we seem to be parts of the same mind. In

my most interesting moments,l often think "Yes . I must tell. . ." We have never met.

      It is such comforting companions I wish to keep. One bright hour with their kind is worth more to me

than the lifetime services  of a psychologist (心理学家 ) , who will only fill  up  the. healing(愈合的)

silence necessary to those darkest moments in which I would rather be my own best friend.

1. In the eighth grade, what the author did before developing proper social behavior was to________.   

A. become serious about her study

B. go to her friend's house regularly

C. learn from her classmates at school

D. share poems and stories with her friend        

2. In Paragraph 3, "We gave London to each other" probably means _________.   

A. our exploration of London was a memorable gift to both of us

B. we were unwilling to tear ourselves away from London

C. our unpleasant feeling about London disappeared

D. we parted with each other in London

3. According to Paragraph 4, the author and her friend_________.   

A.call each other regularly

B. have similar personalities

C. enjoy writing to each other

D. dream of meeting each other

4. In the darkest moments, the author would prefer to________.  

A seek professional help        

B. be left alone

C. stay with her best friend      

D. break the silence

5. What is the best title for the passage? ________.

A. Unforgettable Experiences

B. Remarkable Imagination

C. Lifelong Friendship

D. Noble Companions

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