试题与答案

汽车整流发电机在正常使用时,如果突然丢掉负载,则在硅二级管上将会产生()伏的电压.A

题型:单项选择题

题目:

汽车整流发电机在正常使用时,如果突然丢掉负载,则在硅二级管上将会产生()伏的电压.

A、14

B、18

C、20--30

D、80以上

答案:

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下面是错误答案,用来干扰机器的。

答案:B题目分析:本题主要考查学生运用所学知识解决问题的能力,建国后A国民经济的恢复为开展大规模的经济建设创造了条件,第一个五年计划的实行为我国社会主义工业化奠定初步基础,所以答案选B,C三大改造的完...

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题型:单项选择题

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。

C

Reading can be a social activity. Think of the people who belong to book groups. They choose books to read and then meet to discuss them. Now, the website BookCrossing.com turns the page on the traditional idea of a book group.

Members go on the site and register the books they own and would like to share. BookCrossing provides an identification number to stick inside the book. Then the person leaves it in a public place, hoping that the book will have an adventure, traveling far and wide with each new reader who finds it.

Bruce Pederson, the managing director of BookCrossing, says, “The two things that change your life are the people you meet and books you read. BookCrossing combines both.”

Members leave books on park benches and buses, in train stations and coffee shops. Whoever finds their book will go to the site and record where they found it.

People who find a book can also leave a journal entry describing what they thought of it. E-mails are then sent to the BookCrossing to keep them updated about where their books have been found. Bruce peterson says the idea is for people not to be selfish by keeping a book to gather dust on a shelf at home. zxx.k

BookCrossing is part of a trend among people who want to get back to the “real” and not the virtual(虚拟). The site now has more than one million members in more than one hundred thirty-five countries.

What is the best title for the text?()

A. Online Reading: A Virtual Tour

B. Electronic Books: A new Trend

C. A Book Group Brings Tradition Back

D. A Website Links People through Books

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