用户提交的作业先存放在外存上并排成一个队列，由作业调度程序选_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

用户提交的作业先存放在外存上并排成一个队列，由作业调度程序选择若干个作业进入内存执行，这种系统称为( )。

A．多进程系统

B．多道批处理系统

C．分时系统

D．分布式系统

答案

参考答案：B

解析：[分析] 多道批处理系统具有多道性，内存中可同时驻留多道程序；无序性：作业之间的执行没有严格的顺序关系；调度行：作业从开始道完成需要经过作业调度和进程调度

单项选择题 A1型题

个体在探究事物真相、思想与理性方面的需要属于（）

A.生理性需要

B.知识性需要

C.社会性需要

D.精神性需要

E.情绪性需要

完形填空

Have you ever been sad because of failure? Please remember, for often. achieving what you set out to do is not the most important thing.
A boy decided to dig a       hole behind his house. As he was       ,a couple of old boys stopped by to give a/an       . “What are you doing？” asked one of the       .“ I want to dig a hole all the way through the earth!” the boy       excitedly. The older boys began to       ,telling him that digging a hole all the way through the earth was       . After a while,the boy picked up a jar(罐子). He       it to the visitors. It was full of all kinds of stones and insects. Then he said calmly and       ,“Maybe I can’t finish digging all the way through the earth,       look at what I’ve found during this period! ”
The boy’s goal was far too       ,but it did cause his to go on. And that is what a goal is        --to cause us to move in the        we have chosen, in other words, to cause us to keep working!
Not       goal will be fully achieved. Not every job will       up with a success. Not every dream will come true. But when you       short of your aim, maybe you can say, “Yes, but look at       I’ve found along the way! So many wonderful things have       my life because I tried to do something!”       is in the digging that life is lived. It is a joy on the       that really makes sense.

D．unnecessary

C．confidently

D．successfully