不能使物质产生电离作用的辐射,即称非电离辐射。下列哪种不是非电离射().
A. 紫外线
B. γ射线
C. 激光
D. 射频辐射
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You are a network administrator for You manage a Windows Server 2003 computer named Testking1. Folder Redirection is enabled for the users' My Documents folders. A user named Peter deletes all the files and folders in his My Documents folder before he leaves TestKing. Peter's manager asks you to recover documents. You do not know if Peter made modifications to the permissions on the files. You need to restore Peter's My Documents folder so that his manager can access the files. You want to achieve this goal by using the minimum amount of administrative effort. What should you do?()
A. Perform a default restoration.
B. Run the Automated System Recover (ASR) wizard.
C. Perform a restoration, and enable the Restore security option.
D. Perform a restoration, and disable the Restore security optio
某网路通过64kbps的广域链路连接到Internet。客户要求尽量高效利用此链路的带宽。则应该使用()连接到Internet。
A. BGP协议
B. OSPF协议
C. RIP协议
D. 静态路由
如果在一个计算机系统内一次只能允许一个用户作业在运行,该用户占用全部系统资源,直到退出为止,则这类系统属于()。
A. 单用户操作系统
B. 批处理操作系统
C. 互联操作系统
D. 实时操作系统