问题 多项选择题

消防用电设备的供电线路采用不同的电线电缆时,供电线路的敷设应满足()的要求。

A.当采用有机绝缘耐火电缆时,可直接采用明敷设或在吊顶内敷设 

B.当采用矿物绝缘电缆时,可直接采用明敷设或在吊顶内敷设 

C.当采用难燃性电缆时,在电气竖井内或电缆沟内敷设可不穿导管保护,但应采取与消防用电缆隔离的措施 

D.采用明敷设、吊顶内敷设或架空地板内敷设时,要穿金属导管或封闭式金属线槽保护,所穿金属导管或封闭式金属线槽要采用涂防火涂料等防火保护措施 

E.当线路暗敷设时,要对所穿金属导管或难燃性刚性塑料导管进行保护,并要敷设在不燃烧结构内,保护层厚度不要小于30mm

答案

参考答案:B, C, D, E

阅读理解

What is a good education? The question is far from being answered. Once more, colleges and universities are changing their programs: they drop "fun courses" and restart some of the traditional subjects neglected (忽视) since the 1960s. Many great schools are again requiring the students to take a number of classes in English, history, literature, the social sciences, philosophy, the natural sciences, and art if they want to get a degree. Meanwhile, the experts are trying to describe the good education of our time. Obviously the purely vocational training once favored is not enough. But neither is the gentleman's education of the nineteenth century. Educational programs must meet the demands of a modern world where men and women have to work and to deal with big problems.

What, then, is a good education of this century? Some educators suggest that it should include foreign languages and the study of foreign cultures; a mastery of English, including the ability to write and speak well, because communications have become all-important in the modern world, and also because "a person who doesn't speak and write clearly doesn't reason clearly either"; some knowledge of the social sciences (sociology, psychology) that deal with human relations and human problems; some basic knowledge of modern science, which would enable future voters to be better informed about current problems like nuclear. Finally, many educators insist that all college graduates should be familiar with computers and modern information system since the educated professionals of tomorrow will have to understand their machines. Is that all? "No, of course not." answer the educators. "We have not mentioned the two great building blocks of education: history and literature!"

小题1:The best title for this passage might be _______.

A.Education

B.A Mastery of English

C.A Good Education

D.Something About Study小题2:The underlined word "drop" in the first paragraph means _______.

A.desert

B.dislike

C.decline

D.neglect小题3:The author thinks that the question about what a good education is _______.

A.has been answered fairly well

B.hasn't been put forward yet

C.has been dealt with successfully

D.has not been answered satisfactorily小题4:Some educational experts believe a mastery of English should include the ability _______.

A.to read fast

B.to write and speak well

C.to write clearly and accurately

D.to listen and speak skillfully

单项选择题