Which two statements regarding a SQL profile are true?()A. It is built by Automatic Tuning Optimizer.B. It cannot be stored persistently in the data dictionary.C. It can be used by the query optimizer automatically.D. It can be created manually by using t

题目
Which two statements regarding a SQL profile are true?()

A. It is built by Automatic Tuning Optimizer.

B. It cannot be stored persistently in the data dictionary.

C. It can be used by the query optimizer automatically.

D. It can be created manually by using the CREATE PROFILE command.


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  • 第1题:

    下列复选框构造方法,错误的是 ( )

    A.setLayout(new GridLayout(3,1));

    B.add(new Checkbox("one",null,true));

    C.add(new Checkbox("two"));

    D.add(new Checkbox("one",true));


    正确答案:D
    解析:该题考查复选框的构造方法。构造方法的一般格式为:public Checkbox (String label,CheckboxGrou Pgroup,boolean state)。选项A、B、C都是正确的,而选项D是错误的,它的第二个参数应该是CheckboxGrou Pgroup,所以选项D是错误的。

  • 第2题:

    WhichcomponentoftheOraclenetworkingarchitectureprovidescharactersetanddatatypeconversionbetweendifferentcharactersetsontheclientandserver?()

    A.SQL*Plus

    B.OracleNet

    C.Two-TaskCommon(TTC)

    D.OracleProtocolSupport(OPS)


    参考答案:C

  • 第3题:

    Norman Blarney is an artist of deep convictions.

    A: claims
    B:suggestions
    C: beliefs
    D:statements

    答案:C
    解析:
    句意:诺曼.布莱梅是一个有坚定信念的艺术家,句中画线部分conviction意为 “信念”。claim意为“要求,声称”。suggestion意为“建议”。belief意为“相信,信赖”。 statement意为“声明,陈述”。画线部分和C项意义接近。故选C项。

  • 第4题:

    下列复选框构造方法,错误的是()。

    A.setLayout(newGridLayout(3,1));

    B.add(newCheckbox("one",null,true));

    C.add(newCheckbox("tWO");

    D.add(newCheckbox("one",true);


    正确答案:D

  • 第5题:

    Import for the first three months this year is larger than that for the__________period last year.


    A.relating

    B.concerning

    C.corresponding

    D.regarding

    答案:C
    解析:
    考查词义辨析。句意为“今年前三个月的进口量比上一年同期多”。relating to“相关的”,concerning“关于”,corresponding“相当的,对应的”,regarding“关于;就……而论”。根据句意可知是今年前三个月和去年相对应的前三个月做对比.故选C。

  • 第6题:

    【单选题】利用cp命令复制系统文件/etc/profile到当前目录下。

    A.#cp /etc/profile /

    B.#cp /etc/profile ./

    C.#cp / /etc/profile

    D.#cp ./ /etc/profile


    B