试题与答案

在多道程序系统中,为了保证公共变量的完整性,各进程应互斥进入相关临界区。所谓临界区,

题型:单项选择题

题目:

在多道程序系统中,为了保证公共变量的完整性,各进程应互斥进入相关临界区。所谓临界区,是指 (21) 。多道程序的引入主要是为了 (22) 。操作系统采用SPOOLing技术提高了 (23) 的利用率。在操作系统中, (24) 是以时间换取空间的技术。系统出现死锁的原因是 (25)

A.一个缓冲区

B.一段数据区

C.同步机制

D.一段程序

答案:

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某校八(五)班学生在学完第二单元《公共利益》后,决定召开一个有关公共利益的主题班会,请你参与:

(1)公共利益应符合哪些标准,说一说。

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(2)我们的生活离不开公共利益,请你说说原因。

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题型:单项选择题

Are you going to high school to go on with your study What will you do if you can’t Don’t worry. Vocational schools are open for you because our country is in need of people with special skills.

Compared with common high schools, vocational schools have more advantages. Firstly, in order to promote the development of vocational education, our country spends a lot of money on it. So you need to pay only a smaller half of the school fee. Secondly, in here you have already started learning practical skills that you can use all your life. But some other students may still worry about how to spend the long three years at high schools. Why Because they didn’t choose the school that suits them. And finally, when they are still wondering where to go, you are already able to live on your own hands proudly. And perhaps it won’t be long before you are on the road to success.

People take different roads because they have different potentials. So different students should choose different schools. Go to high school if you think that you can go farther on that road. Choose a key high school if you are lucky enough to have the chance. Enter a vocational school if you are interested in the lessons there and you are better at making things with your hands.

In a word, think carefully and see what kind of person you are. Remember, always choose things that suit you.

What does the second paragraph talk about()

A.The future of vocational schools.

B.How to learn a skill.

C.The advantages of vocational schools.

D.How to succee

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