问题 问答题 简答题

CSC2000变电站综合自动化系统有何特点?

答案

参考答案:

CSC2000综合自动化系统是北京哈德威四方保护与控制设备有限公司产品,有以下特点:

(1)以电子计算机作为处理各类变电设备信号的基础平台,取代了常规变电站大量的中央控制屏柜,使主控制室的面积大大减少。

(2)以微机监控系统为主、人工为辅的方式,对变电站内的日常操作、事故及异常信息进行监视、控制,信息处理的正确性和可靠性提高。

(3)通过光缆及站内局域网将一、二次变电设备信息以数字信号的形式传送并共享至主控制室各功能计算机上,提高资源利用,使信息处理的准确性得到提高。

(4)将变电站实时数据(电流、功率等)存储于计算机数据库内,方便查找及管理站内变电信息。

(5)可使用如综合信息管理系统、仿真培训系统及运行、操作、事故处理指导系统等一系列应用程序,增强变电站的综合运行水平。

(6)实现信息远传,达到无人或少人值班。

阅读理解

People with disabilities make up a large part of the population. It is estimated that over 35 million Americans have physical, mental, or other disabilities. About half of these disabilities are “developmental", i.e., they occur before the individual's twenty-second birthday, often from genetic conditions, and are severe enough to affect three or more areas of development, such as mobility, communication, employment, etc. Most other disabilities are considered “adventitious", i.e., accidental or caused by outside forces.

Prior to the 20th century, only a small percentage of people with disabilities survived for long. Medical treatment for these disabilities was unavailable. Advancements in medicine and social services have created a climate in which people with disabilities can expect to have such basic needs as food, shelter, and medical treatment. Unfortunately, these basics are often not available. Civil liberties such as the right to vote, marry, get an education, and gain employment have historically been denied on the basis of disability.

In recent decades, the disability rights movement has been organized to fight against these infringements(违反;侵犯)of civil rights. Congress responded by passing major legislation recognizing people with disabilities as a protected class under civil rights statutes.

Still today, people with disabilities must fight to live their lives independently. It is estimated that more than half of qualified Americans with disabilities are unemployed, and a majority of those who do work are underemployed. About two-thirds live at or below the official poverty level.

Significant barriers, especially in transportation and public awareness, prevent disabled people from taking part in society. For example, while no longer prohibited by law from marrying, a person with no access to transportation is effectively excluded from community and social activities which might lead to the development of long-term relationships.

Only when public attitudes advance as far as laws have will disabled people be fully able to take their rightful place in society.

36. A “developmental" disability ______.

A. develops very slowly over time

B. is caused by forces

C. occurs in youth and affects development

D. is getting more and more severe

37.Most disabled people used to die early because ______.

A. disabilities destroyed major bodily functions

B. they were not very well looked after

C. medical techniques were not available

D. they were too poor to get proper treatment

38. In the author's opinion, to enable the disabled people to take their rightful place in society, ______.

A.more laws should be passed

B.public attitudes should be changed

C.government should provide more aids

D.more public facilities should be set up

39. Which of the following cannot be inferred(推断)from the passage ?

A.Many disabled people may remain single for their whole life.

B.The public tends to look down upon the disabled people.

C.The disabled people feel inferior to those surrounding them.

D.  Discriminatory laws prevent the disabled from mixing with others.

40. The best title for this passage might be ______.

A.Handicaps(不利条件;障碍;)of People with Disabilities

B.The physical difficulties of the Disabled

C.The Causes for Disabilities

D.Medical Treatments for Disabilities

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