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You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement should you use to enabl

题目

You have not configured Oracle Managed Files (OMF) in your database. You do not want to scan the entire datafile every time an incremental backup is performed. You decide to enable the block change tracking feature. Which statement should you use to enable the block change tracking feature?（）

A. ALTER DATABASE ENABLE BLOCK CHANGE TRACKING;

B. ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING USING FILE <path>;

C. ALTER DATABASE ENABLE BLOCK CHANGE TRACKING USING FILE <path>;

D. ALTER SYSTEM ENABLE BLOCK CHANGE TRACKING;

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1.On Monday morning some teachers exchanged a few ().A.how-are-yousB.of how-are-you’sC.how-are-you’sD.of how are you

2.How long() you() a member of the club?A.have,,joinedB.have,,beenC.has,,joinedD.has,,been

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  • 第1题：

    9． _______you _______ stay at home today?

    A． Do ; have to

    B． Must; have to

    C． Have; to

    D． Do ; must


    正确答案：A
    9．A【解析】have to的疑问形式借助动词do来实现， must的疑问形式是将must提到主语之前，另外还需注意have to与must不能重复使用。故答案为A。

  • 第2题：

    What's ( )job? Are ( ) British?

    A. your, your

    B. you, your

    C. your, you


    正确答案：C

  • 第3题：

    （ ） – Is Miss White __________ English teacher, Maria?

    – No, she teaches __________ geography.

    A．your；my

    B．you；mine

    C．you；us

    D．your；us


    正确答案：D

  • 第4题：

    —Where____you____lunch?

    —Athome．Therewasnoschoollunch

    A．did；have

    B．are；having

    C．will；have

    D．do；have


    正确答案：A

  • 第5题：

    Merry Christmas, George! Here is a card for ________, with ________ best withes.

    A.you…your

    B.you…our

    C.us…our

    D.us…your


    参考答案：B

  • 第6题：

    You look（） What（）you（）?

    Atire；did；do

    Btiring；have；done

    Ctired；do；do

    Dtired；have；been doing


    D
    略

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