Photoshop中双击图层调板中的背景层，并在弹出的对话框中输入图层名称，可把背景层转换为普通的图象图层。
钎剂
You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You plan to deploy the application to a test server. You need to ensure that during the initial request to the application， the code-behind files for the Web pages are compiled. You also need to optimize the performance of the application. Which code fragment should you add to the Web.config file？ （） ["A","B","C","D"]
煤气冷却、净化系统的各种塔器与厂区专用铁路中心线的距离应不小于（）m。 ["30","20","10","5"]
Your network consists of a single Active Directory domain. All servers run Windows Server 2003 Service Pack 2 (SP2). All client computers run Windows XP Professional Service Pack 3 (SP3). You deploy a server named Server1 and install Terminal Server. After four months, users report that they can connect to Server1 by using Remote Desktop Connection, but are unable to log on. You verify that the user permissions have not changed. You need to ensure that users can log on to Server1 by using Remote Desktop Connection. What should you do? （） [" Restart Server1."," Restore the system state of Server1."," Install and configure Terminal Server Licensing."," Modify the Terminal Services service account on Server1."]
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