试题与答案

现代科学技术和工业生产的迅猛发展,在丰富了人类的物质生活的同时,也带来了众多的潜在危

题型:问答题

题目:

现代科学技术和工业生产的迅猛发展,在丰富了人类的物质生活的同时,也带来了众多的潜在危险。1976年意大利塞维索工厂环己烷泄漏事故,造成30人伤亡,迫使22万人紧急疏散;1984年墨西哥城液化石油气爆炸事故,使650人丧生,数千人受伤;1984年印度博帕尔市郊农药厂发生甲基异氰酸盐泄漏恶性中毒事故,有2500多人中毒死亡,20余万人中毒受伤且其中大多数人双目失明,67万人受到残留毒气的影响。1993年8月5日,深圳化学危险品仓库爆炸火灾事故,造成15人死亡,100多人受伤,损失2亿多元;1997年6月27日,北京东方化工厂爆炸事故,造成8人死亡,直接经济损失1亿多元;2004年4月16日,重庆市辖区江北区天原化工厂氯氢分厂8个液氯储槽罐中的5个发生爆炸,致使两边建筑物发生部分倒塌,造成9人死亡,3人受伤,附近约15万市民被迫紧急疏散。
这些涉及危险品的事故,尽管起因和影响不尽相同,但它们都有一些共同特征:都是失控的偶然事件,会造成工厂内外大批人员伤亡,或是造成大量的财产损失或环境损害,或是两者兼而有之。发生事故的根源是设施或系统中储存或使用易燃、易爆或有毒物质。事实表明,造成重大工业事故的可能性和严重程度,既与危险品的固有性质有关,又与设施中实际存在的危险品数量有关。
根据以上场景,回答下列问题:

重大危险源控制系统主要由哪几个部分组成

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析: 本题考查派生类的构造函数和析构函数,在定义一个派生类的对象时,先调用基类的构造函数,然后再执行派生类的构造函数;对象释放时,先执行派生类的析构函数,再执行基类的析构函数。本题中定...

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题型:阅读理解

阅读理解。

     When you are learning a language, listening, speaking and writing are important,   but reading can  also

be very helpful. When you read,  you can not only learn some new words, but also learn how to use them. When you read a passage, it gives you a good example for writing. Here are some good reading tips.

     Firstly, try to read at the right level (水平). Read something that you can understand.  If it is too  hard

for you, it is not interesting.

     Secondly, try to understand the new words.  If there are four or five new words on a page,  don't  use

a dictionary.  Instead, try to guess their meanings as you read.   Mark (作标记) them with a pencil. Then

look them up in a dictionary when you finish reading,   and write them in your own vocabulary book.  Try

to remember them.

     Thirdly, try to read for a short time once a day. Fifteen minutes or half an hour every day is better than

two hours every Sunday.   For example,   you can read before you go to bed,   or after you get up  or  at

lunchtime.

     Lastly, read something that interests you. Choose a newspaper, a book or a magazine about a subject

that you like. It will be easy enough for you to understand.

1. The underlined word "tips" in the passage means "_____  " in Chinese.

A. 末端        

B. 小费        

C. 处所      

D. 建议

2. How many reading tips does the writer give us?

A. Six.          

B. Five.        

C. Four.      

D. Three.

3. If you meet a few new words on a page while reading, you can _____  .

A. stop reading

B. guess the meanings at first

C. write them down at once

D. look them up right away

4. Which of the following is TRUE according to the passage?

A. Reading a lot can help you write better.

B. It is useful for you to read for long once a week.

C. When you read, you can only learn some new words.

D. Try to read something hard to make your English better.

5. Which is the BEST title for the passage? 

A. How to look up a new word    

B. How to make reading better    

C. How to remember new words

D. How to choose something to rea

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