问题 问答题 简答题

简述贝克曼梁法测定土基回弹弯沉的测试步骤。

答案

参考答案:

克曼梁法测定土基回弹弯沉的测试步骤:

1、选点,按照测试性质、频率在测试路段上选点;

2、将测试车后轮轮隙对准测点后约3-5cm处的位置上;

3、将弯沉仪插入汽车后轮轮隙的缝隙处,与汽车行驶方向一致,弯沉仪测头放置在轮隙中心偏前3-5cm处,将百分表安装在弯沉仪测杆上;

4、汽车缓缓前进,百分表顺着变形的增加顺时针转动,当转动到最大时迅速读取初读数L1,汽车仍在前进,表针反时针回转,待汽车驶出弯沉影响半径后,汽车停止,读取终读数L2

5、计算回弹弯沉值。

单项选择题
阅读理解

Our eating habits are very important for good health and a strong body. There are times when most of us would have sweets and ice-cream rather than eat meat and rice. Sweets and ice-cream are not bad for the stomach if we eat at the end of a meal. If we drink beer at meals, it may take away our appetite. It is important for us to eat our meal at the same time each day. When we feel hungry, it is a sign that our body needs food. When we feel angry or excited, we may not want to eat. A long time ago, in England, some judges used to decide whether a man was telling the truth by giving him some dry bread. If the man could not swallow the bread, it was a sign that he was not telling the truth. Although this seems very strange and rather foolish, it is indeed an excellent way of finding out the truth. A man who is worrying about something has difficulty in swallowing anything dry. Because he is worried, he loses his appetite and does not want to eat.

小题1:Why do we have to form good eating habits?

A.Because we want to eat more.

B.Because we enjoy our meal.

C.Because we want to save time.

D.Because we want to keep fit.小题2:When do you think it is good to eat sweets and ice-cream according to the passage?

A.When we are happy

B.When we have a good appetite.

C.After a meal.

D.Before a meal小题3:The word“swallow” means______.

A.take into the stomach through the throat

B.eat with difficulty

C.break with the teeth before taking in

D.drink like a fish小题4:When does the writer think it would be better to have our meal?.

A.When our work is over.

B.At the fixed time every day.

C.When we feel happy.

D.When every family member is home.小题5:What could a man do if he told a lie according to some judges in old England?.

A.He could eat a lot of food.

B.He could hardly need any food.

C.He could swallow some dry bread easily.

D.He could not swallow any dry bread.