问题 问答题 简答题

尾气净化工段如何投用急冷塔?

答案

参考答案:①打开急冷塔底部脱氧水阀,引脱氧水入急冷塔,急冷塔加脱氧水至液面80%左右,关严脱氧水阀。

②改通急冷水循环流程,启动急冷水泵,急冷水建立循环。

③反应器升温时投用急冷水空冷器,控制急冷水温度和尾气入吸收塔温度。

④急冷塔液位上升后,投用急冷水过滤器,投用急冷塔液位控制,把多余水送出装置,控制急冷塔液位。

⑤投用急冷水PH值在线分析仪,当急冷水PH值下降时,从急冷水泵入口处加入液氨或者加脱氧水置换急冷水,控制急冷水PH值。

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In recent years many countries of the world have been faced with the problem of how to make their workers more productive. Some experts say the ___1___ is to make jobs more varied(多样的). But do more varied jobs ___2___ greater productivity? There is evidence to suggest that ___3___variety certainly makes the worker’s life more enjoyable, it doesn’t ___4___ make him work harder. As far as increasing productivity is concerned, then, ___5___ is not an important factor.

Other experts feel that giving the worker___6___ to do his job in his own way is important, and there is no doubt that this is true. The ___7___ is that this kind of freedom can’t easily be given in the modern factory with its complicated(复杂的) machinery which must be used in a ___8___ way. Thus while freedom of choice may be important, there is usually very little that can be done to ___9___ it.

Another important ___10___ is how much each worker ___11___ to the product he is making. In most factories the worker ___12___ only one small part of the product. Some car factories are now ___13___ with having many small production lines rather than one large one, so that each worker contributes more to the production of the cars on his___14___. It would seem that not only is degree of worker contribution an important factor ___15___ it is one we can do something about.

To what___16___ does more money lead to greater productivity? The workers themselves certainly think this is ___17___. But perhaps they want more money only because the work they do is so boring. ___18___ just lets them enjoy their spare time more. A ___19___ argument may explain demands for shorter working hours. Perhaps if we ___20___ making their jobs more interesting, they will neither want more money, nor will shorter working hours be so important to them.

1. A. answer   B. course C. attempt      D. system

2. A. run across      B. lead to       C. result from D. pick up

3. A. because  B. as       C. while  D. as though

4. A. mentally B. physically   C. carefully    D. actually

5. A. variety   B. relaxation C. creativity    D. machinery

6. A. judgement     B. freedom     C. direction    D. comfort

7. A. secret     B. skill    C. problem     D. strength

8. A. amusing B. dull    C. changeable D. fixed

9. A. use  B. create  C. supply D. fear

10. A. measure       B. invention    C. consideration     D. work

11. A. lies       B. sticks  C. objects       D. contributes

12. A. likes     B. equips C. transports   D. sees

13. A. tired     B. pleased      C. worrying       D. experimenting

14. A. own     B. will    C. line     D. hand

15. A. but       B. and     C. so       D. however

16. A. extent   B. quality       C. store   D. difference

17. A. natural  B. important   C. worrying    D. unbelievable

18. A. Rest     B. Sports C. Money       D. Playing

19. A. complete      B. friendly      C. given  D. similar

20. A. advise   B. succeed in  C. object to     D. are tried of