【单选题】【消耗次数:1】
在操作系统中,JCB是指( )。
文件控制块
进程控制块
作业控制块
程序控制块
参考答案:
复制
纠错
相关题目
【单选题】 进程控制块是描述进程状态和特性的数据结构,一个进程( )。
①  可以有多个进程控制块
②  可以和其他进程共用一个进程控制块
③  可以没有进程控制块
④  只能有唯一的进程控制块
【单选题】 进程控制块是描述进程状态和特性的数据结构,一个进程( )。
①  可以有多个进程控制块
②  可以和其他进程共用一个进程控制块
③  可以没有进程控制块
④  只能有唯一的进程控制块
【单选题】 进程控制块是描述进程状态和特性的数据结构,一个进程()。
①  可以有多个进程控制块
②  可以和其他进程共用一个进程控制块
③  可以没有进程控制块
④  只能有唯一的进程控制块
【单选题】 一个进程的状态信息存放在该进程控制块PCB的_____区域中。()
①  标识信息
②  说明信息
③  现场信息
④  管理信息
【判断题】 进程控制块(PCB)是专为用户进程设置的私有数据结构,每个进程仅有一个PCB。
①  正确
②  错误
【判断题】 进程控制块(PCB)是专为用户进程设置的私有数据结构,每个进程仅有一个PCB。()
①  正确
②  错误
【单选题】 在操作系统中,JCB是指( )。
①  文件控制块
②  进程控制块
③  作业控制块
④  程序控制块
【单选题】 在操作系统中,JCB是指()。
①  文件控制块
②  进程控制块
③  作业控制块
④  程序控制块
【单选题】 在微程序控制中,把操作控制信号编成( )。
①  微指令
②  微地址
③  操作码
④  程序
【单选题】 可编程序控制器程序的梯形图和功能块图都可以转换为语句表。 ( )
①  正确
②  错误
随机题目
【单选题】 _____withthesizeofthewholeearth,thehighestmountaindoesnotseemhighatall.
①  When compared
②  Compare
③  While comparing
④  Comparing
【单选题】 Thats pretty good that you get up and go running, but I ______ like running early in the morning since I’ve got to prepare breakfast for my family.
①  have a good time
②  have a hard time
③  have time
④  have much time
【单选题】 It has been raining all day, but even though it______, we______there by tomorrow.
①  didnt rain, couldn’t get
②  hadn’t rained, couldn’t get
③  didn’t rain, can’t get
④  hadn’t rained, can’t get
【单选题】 The judge insisted that the woman______ innocent and that she______at once.
①  was; be set free
②  be; be set free;
③  be; was set free
④  was; was set free
【单选题】 The manager______ at 8:30 am for the meeting, but he didn’t show up.
①  ought to arrive
②  should have arrived
③  should arrive
④  was supposed to arrived
【单选题】 If Linda had practised hard enough last week,she______ more confident on the stage now.
①  would have been
②  had been
③  is
④  would be
【单选题】 Theyareconsidering______beforethepricesgoup.
①  of buying the house
②  with buying the house
③  buying the house
④  to buy the house
【单选题】 After the student was praised for what he had done, he said:“ I______ even better under harder conditions. ”
①  had done
②  did
③  would have done
④  would do
【单选题】 The old man is upset in fact today, but he looks as if he______ as happy as before.
①  will be
②  were
③  had been
④  is
【单选题】 Thechildrenwenttheretowatchtheirontower________.
①  to erect
②  erecting
③  be erected
④  being erected