问题 问答题 简答题

简述对有爆炸危险的厂房总体布局进行防火检查的主要内容。

答案

参考答案:

主要检查有爆炸危险的甲、乙类厂房、总(分)控制室和相关设备用房的布置位置。检查要求为:

(1)有爆炸危险的甲、乙类厂房宜独立设置。

(2)有爆炸危险的甲、乙类厂房的总控制室需独立设置;分控制室宜独立设置,当采用耐火极限不低于3.00h的防火隔墙与其他部位分隔时,可贴邻外墙设置。

(3)净化有爆炸危险粉尘的干式除尘器和过滤器宜布置在厂房外的独立建筑内,且建筑外墙与所属厂房的防火间距不得小于10m。对符合一定条件可以布置在厂房内的单独房间内时,需检查是否采用耐火极限分别不低于3.00h的防火隔墙和1.50h的楼板与其他部位分隔。

问答题
阅读理解

In the computer age, most of us take a broadband(宽带)Internet connection for granted. Whether cable or mobile broadband, today’s connections are many times faster than those in the early days. Videos play smoothly, complex websites load quickly, and files download much faster than ten years ago. And the files are much bigger too.

There’s a catch, of course: You have to live near enough to a major city to get broadband Internet. If you don’t, it’s slow dial-up access for you. And for those living really far out, there may be no Internet access at all.

Technology experts often talk about the “last mile” problem, which refers to the difficulty of bringing Internet access to remote locations. In cities and suburbs, it’s relatively easy to provide access for everyone. It is much more difficult to deliver access to those living far from cities, especially in developing countries. Internet service providers, for their part, have been reluctant to provide access to sparsely (稀疏地) populated areas. The handful of Internet users they would reach wouldn’t cover the expense.

But every year, technological advancements allow of more and more Internet users. Most broadband connections today run over existing cable TV and telephone lines although these technologies aren’t available everywhere.

Some companies have delivered the Internet over standard power lines. Advancements in cheaper, more efficient fiber optics cables (光纤电缆) promise to bring extremely fast Internet connections to more users.

Still, the “last mile” problem remains hard to deal with. There will always be somewhere that doesn’t have an affordable broadband connection. But someday that might not matter. If the rapid progress in cell phone technology is any indication (迹象), it may not be too long before an Internet connection simply follows you wherever you go.

小题1:The underlined part “a catch” (in Paragraph 2) probably means “_____”.

A.a rare challenge

B.a desirable plan

C.an efficient device

D.a hidden problem小题2:What can we know from the third paragraph?

A.Internet connection has not been popular in most cities.

B.Internet service providers care about rural(农村的)customers.

C.Computer is popular in developing countries.

D.It is hard to bring Internet access to users in remote areas.小题3:Paragraph 4 mainly tells us that technological advancements _____.

A.make TV and telephone available everywhere

B.bring great change to people’s everyday life

C.make it possible for more people to use the Internet

D.bring faster Internet connections to users小题4:What may eventually settle the “last mile” problem?

A.The broadband connection’s getting faster.

B.More and more Internet users.

C.more and more Internet connections.

D.The rapid progress in cell phone technology.