[单选] 当使用绘图工具时图像符合下面哪个条件才可选中“背后”（Behind）模式？（）   

You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application must redirect the original URL to a different ASPX page.  You need to ensure that the users cannot view the original URL after the page is executed. You also need to ensure that each page execution requires only one request from the client browser. What should you do？（） Use the Server.Transfer method to transfer execution to the correct ASPX page.。 Use the Response.Redirect method to transfer execution to the correct ASPX page.。 Use the HttpContext.Current.RewritePath method to transfer execution to the correct ASPX page.。 Add the Location： new URL value to the Response.Headers collection. Call the Response.End（） statement. Send the header to the client computer to transfer execution to the correct ASPX page.。 简述苦味健胃药作用机理及用药注意事项。 You have a Web server named Server1 that runs Windows Server 2003 Service Pack 2 (SP2). Server1 hosts one Web site. You create a second Web site that hosts a third-party Web application named App1. The vendor of the third-party application states that the application does not support host headers. You need to ensure that users can access both Web sites. What should you do?（） Enable WebDAV.。 Enable Server Side Includes.。 Configure both Web sites to use different IP addresses.。 Configure both Web sites to use different application pools.。 You use Microsoft .NET Framework 4 to create an application.  The application performs resource-intensive calculations that consist of multiple layers of nested looping. The application will be deployed to servers that contain varying hardware configurations.  You need to ensure that the application utilizes CPU resources on the server in the most efficient manner.  You want to achieve this goal by using the minimum amount of code.  What should you do?（） Use multiple System.Threading.Thread objects.。 Use the background worker process (BWP).。 Use the Thread.BeginInvoke method.。 Use the Parallel.For method.。 自然人企业 当使用绘图工具时图像符合下面哪个条件才可选中“背后”（Behind）模式？（）