[单选]
You have a USB drive. You connect the drive to a computer that runs Windows XP Professional Service Pack 2 (SP2). You discover that after 15 minutes, the USB drive fails to appear in My Computer. You need to ensure that the USB drive appears in My Computer.
What should you do?（）

A . At the command prompt, run defrag.exe -f.
B . At the command prompt, run chkdsk.exe /f.
C . From Disk Management, assign a drive letter to the USB drive.
D . Delete the usbui.dll file from the computer, and then restart the computer.

“#”表示什么记号？ The TestKing network is subnetted using 29 bits for the subnet mask. Which wild card mask should be used to configure an extended access list to permit or deny access to an entire subnetwork?（） 255.255.255.224。 255.255.255.248。 0.0.0.224。 0.0.0.8。 0.0.0.7。 0.0.0.3。普鲁卡因浸润麻醉时在其药液中加入适量肾上腺素的目的是（）延缓其吸收。加速其代谢消除。加速其吸收。促进其排泄。您有一台包含下表中所示文件夹的计算。您不小心删除了 Data1 文件夹。您需要还原 Data1 文件夹的内容。解决方案不得覆盖对 Data2 文件夹所做的任何更改。您应该怎么做？（）从“恢复”中，还原一个系统还原点。从 User1 文件夹的“以前的版本”选项卡中，单击“复制”。从 User1 文件夹的“共享”选项卡中，修改“缓存”设置。启动计算机，然后按 F8。还原“最近一次的正确配置&rdquo。稳态

You have a USB drive. You connect the drive to a computer that runs Windows XP Professional Service Pack 2 (SP2). You discover that after 15 minutes, the USB drive fails to appear in My Computer. You need to ensure that the USB drive appears in My Computer.
What should you do?（）

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[单选] You have a USB drive. You connect the drive to a computer that runs Windows XP Professional Service Pack 2 (SP2). You discover that after 15 minutes, the USB drive fails to appear in My Computer. You need to ensure that the USB drive appears in My Computer. What should you do?（）

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[单选]
You have a USB drive. You connect the drive to a computer that runs Windows XP Professional Service Pack 2 (SP2). You discover that after 15 minutes, the USB drive fails to appear in My Computer. You need to ensure that the USB drive appears in My Computer.
What should you do?（）