What is true about a background engine? ()(Choose two.)A. It is a server-side PL/SQL procedure.B. When executing a PL/SQL function activity, it will automatically ping (cache) the PL/SQL code.C. It executes deferred activities in decreasing order of their

题目
What is true about a background engine? ()(Choose two.)

A. It is a server-side PL/SQL procedure.

B. When executing a PL/SQL function activity, it will automatically ping (cache) the PL/SQL code.

C. It executes deferred activities in decreasing order of their Cost property value (activities with higher cost value are processed first).

D. It would fail if another background engine process is started to handle the same type of activities within the same item type.

E. During its single invocation, it processes activities that were stuck, deferred or timed out when the background engine was started.

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更多“What is true about a background engine? ()(Choose two.) ”相关问题

  • 第1题：

    WhichofthefollowingareassociatedwiththeapplicationlayeroftheOSImodel?(two.)()

    A.ping

    B.Telnet

    C.FTP

    D.TCP

    E.IP


    参考答案：B, C

  • 第2题：

    CSS中用于控制图像的属性包含以下那些？

    A．background

    B．background-repeat

    C．background-color

    D．background-image

    E．background-position

    F．background-attachment

    G．background-size

    H．background-origin

    I．body

    J．border

    K．block


    背景重复：background-repeat；图片依附位置：background-attachment

  • 第3题：

    5、设置背景图像，使用（）命令。

    A．background-size

    B．background-repeat

    C．background-color

    D．background-image


    background-repeate

  • 第4题：

    资料：We never thought we'd say this, but we'd welcome back some chilly weather.
    A cool mass of air heads toward the United States from the upper regions of Canada and Alaska this week, according to the National Weather Service.
    According to the NWS, a mass of cold air will drop from the Arctic regions to Canada and then the upper Midwest next week.
    Temperatures across the Midwest will drop into the 60s and 70s—a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. And the relatively cooler air may be felt as far East as New York and Washington.
    The cool breezes may be a welcome relief this time around, but remember the last few times we got hit with Arctic air?
    Temperatures in cities including Chicago, Cleveland, New York, and Louisville fell into single-digit and negative territory for long stretches during the harsh winter months of early 2014. But we're sure you remember.

    What’s the temperature when the report was written?

    A.About 60s and 70s.
    B.Between 60s and 90s.
    C.Below 60s.
    D.About 80s and 90s.

    答案：D
    解析：
    本题考查的是细节理解。
    【关键词】temperature；when the report was written
    【主题句】Temperatures across the Midwest will drop into the 60s and 70s—a sharp difference from the 80 degree and 90 degree temperatures from recent weeks. 中西部地区的气温将下降到60-70华氏度，与最近几周的80-90华氏度的温度有很大的不同。
    【解析】本题的问题是“写这篇报道时气温是多少？”。选项A意为“约为60-70华氏度”；选项B意为“为60和90华氏度之间”；选项C意为“华氏60度以下”；选项D 意为“约为80和90华氏度”。根据题目中关键词找到主题句，结合主题句故选D。

  • 第5题：

    下面哪个属性可以设置背景颜色。（）

    A．background-color

    B．background-image

    C．background-position

    D．background-repeat


    background-color

  • 第6题：

    以下关于背景描述正确的是（）.

    A．background-image

    B．background-repeat

    C．background-attachment

    D．background


    background-image;background-repeat;background-attachment;background

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