问题 问答题 论述题

什么是用户事故?用电检查部门对用户事故管理的方针和原则是什么?

答案

参考答案:

用户事故系指供电营业区内所有高、低压用户在所管辖电气设备上发生的设备和人身事故及扩大到电力系统造成输配电系统停电的事故。

(1)由于用户过失造成电力系统供电设备异常运行,而引起对其用户少送电或者造成其内部少用电的。例如:1)用户影响系统事故:用户内部发生电气事故扩大造成其他用户断电或引起电力系统波动大量甩负荷。2)专线供电用户事故:用户进线有保护,事故时造成供电变电所出线断路器跳闸或两端同时跳闸,但不算用户影响系统事故。

(2)供电企业的继电保护、高压试验、高压装表工作人员,在用户受电装置处因工作过失造成用户电气设备异常运行,从而引起电力系统供电设备异常运行,对其他用户少送电者。

(3)供电企业或其他单位代维护管理的用户,电气设备受电线路发生的事故。

(4)用户电气工作人员在电气运行、维护、检修、安装工作中发生人身触电伤亡事故,按照国务院1991年75号令构成事故者。用电检查部门对用户事故管理要贯彻“安全第一,预防为主”的方针和“用户事故不出门”的原则。

阅读理解

阅读理解

     Endangered languages are languages that wouldn't exist any longer, much like endangered species of

plants or animals. Languages are considered to be endangered when parents are no longer teaching the

language to their children and are not using it actively in everyday life. A language is considered to nearly

disappear when it is spoken by only a few elderly native speakers.

     The world faces enormous challenges in order to protect different kinds of languages. Of the more than 6,912 languages, half may be in danger of disappearing in the next several decades.

     It is caused by many reasons: small numbers of speakers, the regular use of other languages, attitudes

towards their languages, moving of the younger population, government policies, and languages used in

education and so on. A language may lack important things such as a body of literature, and people who

read and write it. A language may also lack prestige (声望) and support of its speakers.

     The survival of a language is also threatened when speakers move to other areas where different

languages are spoken, or when government policies improve the use of a specific language in school,

official business and the media. These situations encourage people to learn the wider-known language and may cause them, especially the young, to stop using their mother tongue. Often those speaking

lesser-known languages will choose to learn a more prestigious language with the hope of greater

economic opportunities. Most of the world's parents are teaching their children English, French, Spanish,

Chinese, Arabic, Russian or some other main languages instead of their own languages for social and

economic reasons.

1. What's the main idea of this passage?

A. Languages in the world.

B. Reasons why languages become endangered.

C. What an endangered language is.

D. Languages spoken by few speakers.

2. About _________ languages will probably disappear in this century according to the passage.

A. more than 6,912

B. more than 3,456

C. 6,912

D. less than 3,456

3. Which of the following best shows the structure of the passage?

①=Paragraph1②=Paragraph2③=Paragraph3④=Paragraph4

4. We can infer that the best way to maintain an endangered language is to _________.

A. forbid the speakers to move about

B. pass laws to protect the language

C. raise the salaries of the people who speak the language

D. teach the language to young children and encourage people to speak it as much as possible

5. All of the following about languages are true EXCEPT __________.

A. many languages will be probably endangered in this century

B. government policies have a big effect on languages

C. the endangered language is a language that is spoken by few people

D. languages are related to their speakers' social and economic position  

判断题