当前位置:考试网  > 试卷库  > 建筑工程  > 工程师考试  > 结构工程师  > 二级专业考试  > 试述电气设备停电检修的安全措施是什么?检修完毕后送电前应检查哪些方面?
试题预览

试述电气设备停电检修的安全措施是什么?检修完毕后送电前应检查哪些方面?

查看答案
收藏
纠错
正确答案:

1.对停电电气设备进行停电、放电(带电容器)、验电、装设接地线。

2.送电前,将所有参与检修人员全部集中,并核对无误后;方可拆除接地装置,并进行送电。

3.根据检修现场实际情况,采取其它有效安全措施。如检修前专项安全教育、检查确认等。

答案解析:

暂无解析

你可能感兴趣的试题

葡萄球菌感染可引起毒素休克综合征,主要由下列何种成分引起

影响血涂片厚薄的因素有

阻塞性黄疸病人的血清除哪项外,其余的酶都增高

单克隆抗体胶体金法检测针对的是hCG的是

下列疾病可使血小板减少,但哪项除外

热门试题 更多>
In the last 12 years total employment in the United States grew faster than at any time in the peacetime history of any country – from 82 to 110 million between 1973 and 1985 – that is, by a full one third. The entire growth, however, was in manufacturing, and especially in no – blue-collar jobs… This trend is the same in all developed countries, and is, indeed, even more pronounced in Japan. It is therefore highly probable that in 25 years developed countries such as the United States and Japan will employ no larger a proportion of the labor force I n manufacturing than developed countries now employ in farming – at most, 10 percent. Today the United States employs around 18 million people in blue-collar jobs in manufacturing industries. By 2010, the number is likely to be no more than 12 million. In some major industries the drop will be even sharper. It is quite unrealistic, for instance, to expect that the American automobile industry will employ more than one –third of its present blue-collar force 25 years hence, even though production might be 50 percent higher. If a company, an industry or a country does not in the next quarter century sharply increase manufacturing production and at the same time sharply reduce the blue-collar work force, it cannot hope to remain competitive – or even to remain “developed.” The attempt to preserve such blue – collar jobs is actually a prescription for unemployment… This is not a conclusion that American politicians, labor leaders or indeed the general public can easily understand or accept. What confuses the issue even more it that the United States is experiencing several separate and different shifts in the manufacturing economy. One is the acceleration of the substitution of knowledge and capital for manual labor. Where we spoke of mechanization a few decades ago, we now speak of “robotization “ or “automation.” This is actually more a change in terminology than a change in reality. When Henry Ford introduced the assembly line in 1909, he cut the number of man – hours required to produce a motor car by some 80 percent in two or three years –far more than anyone expects to result from even the most complete robotization. But there is no doubt that we are facing a new, sharp acceleration in the replacement of manual workers by machines –that is, by the products of knowledge. 1.According to the author, the shrinkage in the manufacturing labor force demonstrates______. A.the degree to which a country’s production is robotized B.a reduction in a country’s manufacturing industries C.a worsening relationship between labor and management D.the difference between a developed country and a developing country 2.According to the author, in coming 25years, a developed country or industry, in order t remain competitive, ought to ______. A.reduce the percentage of the blue-collar work force B.preserve blue – collar jobs for international competition C.accelerate motor – can manufacturing in Henry Ford’s style D.solve the problem of unemployment 3.American politicians and labor leaders tend to dislike_____. A.confusion in manufacturing economy B.an increase in blue – collar work force C.internal competition in manufacturing production D.a drop in the blue – collar job opportunities 4.The word “prescription” in “a prescription for unemployment” may be the equivalent to ______ A.something recommended as medical treatment B.a way suggested to overcome some difficulty C.some measures taken in advance D.a device to dire 5.This passage may have been excepted from ________ A.a magazine about capital investment B.an article on automation C.a motor-car magazine D.an article on global economy
试题分类: 大学英语六级
练习次数:8次
试题分类: 初级(口语)
练习次数:0次
Passage 3 Questions 11 to 15 are based on the following passage: The idea of a special day to honor mothers was first put forward in America in 1907. two years later a woman, Mrs. John Bruce Dodd, in the state of Washington proposed a similar day to honor the head of the family—the father. Her mother died when she was very young, and her father brought her up. She loved her father very much. In response to Mrs. Dodd’s idea that same year—1909, the state governor of Washington proclaimed (宣布) the third Sunday in June Father’s Day. The idea was officially approved by President Woodrow Wilson in 1916. in 1924, President Calvin Coolidge recommended national observance of the occasion “to establish more intimate (亲密) relations between fathers and their children, and to impress upon fathers the full measure of their obligations.” The red or white rose is recognized as the official Father’s Day flower. Father’s Day took longer to establish on a national scale than Mother’s Day, but as the idea grained popularity, tradesmen and manufacturers began to see the commercial possibilities. They encouraged sons and daughters to honor their fathers with small thank-you presents, such as a tie or pair of socks, as well as by sending greeting cards. During the Second World War, American servicemen stationed in Britain began to request Father’s Day greeting cards to send home. This generated a response with British card publishers. Though at first the British public was slow to accept this rather artificial day, it’s now well celebrated in Britain on the third Sunday in June in much the same way as in America. Father’s Day seems to be much less important as occasion than the Mother’s Day. Not many of the children offer their fathers some presents. But the American fathers still think they are much better fated than the fathers of many other countries, who have not even a day for their sake in name only. 11. When did Father’s Day officially begin to have national popularity? A. 1907 B. 1909 C. 1916 D. 1924 12. Who first started the idea of holding the Father’s Day? A. Mrs. John Bruce Dodd B. Mrs. John Bruce’s Mother C. The government of Washington. D. Some businessmen. 13. What flower will be popular on Father’s Day? A. Lily B. Water Lily C. Red rose or white rose D. Sunflower. 14. Which statement is true, a according to this passage? A. It took even longer for Mother’s Day to gain national popularity. B. The businessmen helped to make Father’s Day popular. C. Father’s Day is only celebrated in America. D. Father’s Day is only a trick of the businessmen to make money. 15. What was the first reaction of the British publishing towards Father’s Day? A. They thought highly of it and accepted it at once. B. They just accepted it at once without any hesitation. C. They just thought it a joke. D. They thought it was too artificial and took a long time to accept.
试题分类: 大学英语六级
练习次数:176次
试题分类: 初级(口语)
练习次数:0次
试题分类: 初级(口语)
练习次数:0次
试题分类: 初级(写作)
练习次数:0次
扫一扫,手机做题