问题 问答题

简要说明DOW火灾、爆炸危险指数法的评价程序。

答案

参考答案:

1)确定单元;

2)求取单元内的物质系数F.;

3)按单元的工艺条件,选用适当的危险系数;

4)用一般工艺危险系数和特殊工艺危险系数相乘求出工艺单元危险系数;

5)将工艺单元危险系数与物质系数相乘,求出火灾、爆炸危险指数(F&EI);

6)用火灾、爆炸指数查出单元的暴露区域半径,并计算暴露面积;

7)查出单元暴露区域内的所有设备的更换价值,并确定的危害系数,求出基本最大可能财产损失MPPD;

)应用安全措施补偿系数乘以基本MPPD,确定实际MPFD;

9)根据实际最大可能财产损失,确定最大损失工作日(MPPD.。

完形填空

完形填空:从每小题A、B、C三个选项中选出能填入空白处的最佳答案。(10分)

The boy   1  red is my classmate. He’s Jimmy. He   2  from the USA. Now he is in China to study(学习)Chinese. He likes  3  very much. He thinks China is great(非常好).

Jimmy is my good friend, too. He has a big problem. He speaks English well but only(只有)a little Chinese. He often helps me   4  my English. I often help him study(学习)Chinese. We   5

each other. He can   6  English.   7  his Chinese is not very good. We often study together(一起)after(在……之后)school.

I have a pen pal from Canada. He can speak English,    8  . He often helps me study English.

He   9  China, too. And he wants to visit the Great Wall(长城). I am very happy to have these

  10  good friends.

小题1:A.in                  B.from                 C.of

小题2:A.meets               B.comes                C.come

小题3:A.Japan               B.Canada               C.China

小题4:A.of                  B.from                 C.with

小题5:A.help                B.look                 C.thank

小题6:A.tell                B.speak                C.think

小题7:A.And                 B.But                  C.Or

小题8:A.to                  B.and                  C.too

小题9:A.likes               B.like                 C.looks

小题10:A.one                B.two                  C.three

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