Files can be lost or destroyed accidentally.Keep (74) copies of all data on removable storage media.A.backupB.backC.blackD.backdown

题目

Files can be lost or destroyed accidentally.Keep (74) copies of all data on removable storage media.

A.backup

B.back

C.black

D.backdown


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  • 第1题:

    The city has done away with all the factories in its centre.

    A:got rid of
    B:set up
    C:built
    D:destroyed

    答案:A
    解析:
    城市取缔了市中心所有的工厂。get rid of“消除”,如:get rid of prejudice in people消除人的偏见。set up“建立”,如:set up a school成立学校。build“修建”,如:build a bridge修建一座桥。destroy“破坏”。

  • 第2题:

    【单选题】使用文件存储数据时,文件存储在软件的()目录下。

    A./data/data/包名/files/

    B./data/data//files/

    C.mnt/sdcard/包名/files/

    D.任意路径


    D

  • 第3题:

    Activity中,可以使用 方法可以打开/data/data/包名/files/a.txt文件的输出流对象。


    openFileOutput()

  • 第4题:

    In low-speed network,it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down.In high-speed networks,this approach often works poorly,because in the(71)between sending the notification and notification arriving at the source,thousands of additional(72)may arrive.In ATM network,a major tool for preventing(73)is(74)control.When a host wants a new virtual(75),it must describe the traffic to be offered and the service expected.

    A.packets
    B.cells
    C.message
    D.files

    答案:A
    解析:

    在低速网络中,通常采用碰到拥塞时,通过向源端反映使其降低发送速率。而在告诉网络中,这种方式将会恶化,因为在发送通告和通告到达之间会有成千上万的其它数据包到达。在ATM网络中,主要采用允许控制来避免拥塞,当有一台主机要建立一条新的虚连接时,它必须描述它所需的流量和服务等级。

  • 第5题:

    在Activity中使用【 】方法可以打开/data/data/包名/files/a.txt文件的输出流对象。


    openFileOutput

  • 第6题:

    【单选题】Android中把数据存储到SD卡对应的目录是()

    A./data/data/包名/files/

    B./mnt/sdcard/files/

    C./mnt/sdcard

    D.任意路径


    mnt/sdcard