问题 填空题

在分层总和法中,地基压缩层厚度的下限取地基的()等于或小于()的20%(软土为10%)土层处。

答案

参考答案:附加应力、自重应力

阅读理解

阅读理解

     As civilization proceeds in the direction of technology, it passes the point of supplying all the basic

essentials of life-food, shelter, clothes and warmth. Then we are faced with a choice between using

technology to provide and fulfill needs which have now been regarded as unnecessary or, on the other

hand, using technology to reduce the number of hours of work which a man must do in order to earn a

given standard of living. In other words, we either raise our standard of living above that necessary for

comfort and happiness or we leave it at this level and work shorter hours.

     I shall take it for granted that mankind has, by that time, chosen the latter alternative. Men will be

working shorter and shorter hours in their paid employment. It follows that the housewife will also

expect to be able to have more leisure in her life without lowering her standard of living. It also follows

that human domestic servants will have completely ceased to exist. Yet the great majority of the

housewives will wish to be relieved completely from the routine operations of the home such as scrubbing

the floors or the bath of the cooker, or washing the clothes or washing up, or dusting or sweeping, or

making beds.

     By far the most logical step to relieve the housewife of routine is to provide a robot which can be

trained to the requirements of a particular home and can be programmed to carry out half a dozen or

more standard operations, when switched by the housewife.

1. As civilization develops in the direction of technology, ________.

A. the basic essentials of life must be supplied

B. it is important to supply the basic essentials of life

C. it is no longer so important as it was in the past to supply all the basic essentials of life

D. it is not necessary to supply the basic essentials of life

2. According to the author, we are faced with________.

A. the choice of providing and fulfilling our needs

B. the choice of using technology

C. the choice of earning a standard of living

D. a choice between using technology to provide and fulfill needs to reduce the number of working hours

3. What alternative will mankind have chosen in future?

A. To leave our standard of living at this level and work shorter hours.

B. To raise our standard of living.

C. To fulfill needs which have been regarded as unnecessary.

D. To lower our standard of living and work shorter hours.

4. Now most housewives wish to________.

A. stop doing their housework

B. do more housework to improve their life

C. get rid of the heavy burden of their housework

D. do only simple and light housework

5. It can be inferred that robots will be invented ______.

A. to take the place of housewives

B. to help manage a family

C. to do the routine of housework instead of human

D. to provide the daily necessities for man

多项选择题