参考答案和解析
正确答案:B
更多“In order to find _______ better job, he decided to study _________ second foreign lang ”相关问题
  • 第1题:

    Considerthefollowingcodesnippet:BEGINDBMS_SCHEDULER.SET_ATTRIBUTE(name=>,,lne_job1,attribute=>,,job_priority,value=>1);END;/Ifthiscodewereexecuted,whichofthefollowingstatementswouldbetrue?()

    A.Thepriorityofthelne_job1jobwouldbesetto1.

    B.Thelne_job1jobwouldbeexecutedsynchronously.

    C.Thelne_job1jobwouldrunimmediatelyintheuserscurrentsession.

    D.Thelne_job1jobwouldretainitscurrentpriority.

    E.Thejobwillimmediatelytakepriorityoverallrunningjobs.


    参考答案:A

  • 第2题:

    某单道批处理系统中有四个作 JOBl、JOB2、JOB3、JOB4,它们到达“输入井”的时刻和所需要的运行时间如下表所示。

    作业 进入系统时间 估计运行时间(分钟)

    JOB1 8:30 80

    JOB2 8:50 20

    JOB3 9:20 40

    JOB4 9:30 35

    假设9:30开始作业调度,按照最高响应比作业优先算法,首先被调度的作业是______。

    A.JOB1

    B.JOB2

    C.JOB3

    D.JOB4


    正确答案:B

  • 第3题:

    B)阅读短文,然后从短文括号中所给词的适当形式填空。

    Climbingthehighestmountainsintheworldisnotan78(easily)job.Youhavetofightbadweather,illnessandfear.ButJordanRomero,athirteen-year-oldboyfromAmerica,willclimb79(Asia)highestmountain,MountQomolangma.Hewillsetoutthismonth.80(He)parentsandhelperswillclimbwithhim.Heplanstotake81(second)monthsforhisclimb.“I'mready.ButifIdon'treachthetop82(successful),I'lltrynexttime,”hesaid.Jordanhasalreadyclimbedthehighestmountainsofsixothercontinents(洲).Ifhe83(get)tothetopthistime,hewillbecometheyoungestpersontoclimbtheworld'shighestmountain.

    78_________


    正确答案:
    easy

  • 第4题:

    When setting arguments for a job, which procedure do you use for types that cannot be implicitly converted to and from a VARCHAR2 datatype?()

    A. SET_JOB_ARGUMENT_VALUE

    B. SET_JOB_VALUE_ANYDATA

    C. SET_JOB_ANYDATA_VALUE

    D. SET_SPECIAL_JOB_VALUE

    E. SET_JOB_ANYTYPE_VALUE


    参考答案:C

  • 第5题:

    设有一组作业,它们的作业提交时刻及估计运行时间如下所示: 作业号 提交时刻 估计运行时间(分钟) Job1 8:30 70 Job2 9:10 30 Job3 9:30 15 Job4 9:50 5 在单道批处理方式下,采用短作业优先调度算法,作业的执行顺序为

    A.Job1,Job4,Job3,Job2

    B.Job1,Job3,Job4,Job2

    C.Job4,Job3,Job2,Job1

    D.Job4,Job1,Job2,Job3


    正确答案:B
    解析:本题考查短作业优先调度算法的概念。短作业(进程)优先调度算法是指对短作业或短进程优先调度的算法。它们可以分别用于作业调度和进程调度。短作业优先调度算法,是从后备队列中选择一个或若干个估计运行时间最短的作业,将它们调入内存运行。而短进程优先调度算法,则是从就绪队列中选出一估计运行时间最短的进程,将处理机分配给它,使它立即执行并一直执行到完成,或发生某事件而被阻塞放弃处理机时,再重新调度。进程首先执行的是Job1,该作业到9:40完成,此时Job2和Job3在等待队列中,按照短作业调度算法,此时执行Job3。Job3在10:10,此时等待队列中有Job2和Job4作业,此时执行Job4,最后执行Job2。正确答案为选项B。

  • 第6题:

    He has made up his mind to give up smoking.

    A:tried
    B:attempted
    C:agreed
    D:decided

    答案:D
    解析:
    make up one's mind:打定主意,决心。decide:决定。例如:Susan has made up her mind that , come what may , she will stay with John.苏珊决心已下,不管发生什么,她都将跟约翰在一起。He decided not to do that.他决定不干那件事。try:设法,例如:We are all trying to improve our English.我们都在设法提高我们的英语水平。attempt:试图,例如:We attempted to quit smoking , but failed.我们试图戒烟,但没有成功。agree:同意,例如:They might not agree with her opinion.他们可能不同意她的意见。故答案为D。