问题 单项选择题

排队等待时间最长的作业被优先调度,这种算法是( )。

A.优先级调度

B.响应比高优先

C.短作业优先

D.先来先服务

答案

参考答案:D

解析:[分析] 对进程调度算法中,排队等待时间最长的作业即是最先进入等待队列的作业;短作业优先算法是根据作业运行时间长短来衡量的;优先级调度算法分为静态优先权和动态优先权;响应比高优先算法其实也是一种优先级调度,其优先权权值相当于响应比,响应比等于作业响应时间除以作业要求服务的时间。

改错题

第Ⅱ卷

第四部分 写作(共两节,满分35分)

第一节 短文改错(共10小题;每小题1分,满分10分)

此题要求改正所给短文中的错误。对标有题号的每一行做出判断:如无错误,在该行右边横线上画一个勾(√);如有错误(每行只有—个错误),则按下列情况改正:

此行多一个词:把多余的词用斜线(\)划掉,在该行右边横线上写出该词,并也用斜线划掉。

此行缺—个词:在缺词处加—个漏字符号(∧),在该行右边横线上写出该加的词。

此行错一个词:在错的词下划一横线,在该行右边横线上写出改正后的词。

注意:原行没有错的不要改。

Last Sunday, my friends and I went outing.                           76. ________

We started out earlier in the morning. It didn’t take                         77. ________

long to get to the South Lake, where is 10 kilometers                       78. ________

away the city. After we arrived there, we divided                           79. ________

ourselves into two team. We had a wonderful time                          80. ________

playing football. When it is time for lunch,                                81. ________

we made a fire to cook a meal. We shared that                             82. ________

we brought in with us. After that, we rowed boats                          83. ________

in the lake and took a lot of pictures. We went                             84. ________

back home late in the afternoon, tiring and happy.                          85. ________

单项选择题