After placing the DB2 unit on the topology diagram, rename the unit to FURNDB by hovering your mouse cursor over the unit and clicking the pencil icon.
在拓扑图中放置DB 2单元之后，通过将鼠标移到单元上并点击铅笔状的图标，来将单元重命名为FURNDB。
Hovering your mouse cursor over the IIS 6.0 unit's red X reveals that the unit has a requirement to be hosted on an operating system.
将鼠标移到IIS 6.0单元的红色x上，揭示单元有一个位于操作系统的需求。
Provide regular maintenance and service for the central processing unit, the printer, the display, the mouse, and the keyboard. Deal with the usual troubles in the computer system.
定期清理保养系统主机、打印机、显示器、鼠标、键盘，并处理系统常见故障。
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