爆破后应进行哪些工作？

计量用电压互感器额定二次负荷的额定功率因数应为0.3—0.5。

有句谚语说：“一个人的食物，可能是另一个人的毒药。”这句话在哲学上体现了( )。

A．价值具有客观性

B．价值具有主体性

C．价值具有社会历史性

D．价值具有多维性

Since advertising can increase sales of production, _____it can _____the price.

A．so; reduced

B．so; reduce

C．/; be reduced

D．/ ; reduce

    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

（）都是糖料作物。

A、甘蔗和糖甜菜

B、糖甜菜和波菜

C、甘蔗和高梁

D、红苕和甘薯