You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. The application contains a custom control that is used to display customer information. You discover that the custom control is not rendering correctly. You need to identify the WPF element that is causing the issue. You want to achieve this goal by using the minimum amount of administrative effort. What should you do?（） Start the application in debug mode.Place a breakpoint at the main entry point of the application.Use the debugger to step through the application code.。 Start the application in debug mode.Place a breakpoint at the main entry point of the application.Use the WPF Tree Visualizer tool.。 Enable IntelliTrace and configure Visual Studio to generate a trace log.Start the application in debug mode.。 "Enable IntelliTrace and configure Visual Studio to generate a trace log.Start the application by double-clicking the executable file (.exe).。
转炉煤气的主要成分是（）。 一氧化碳。 二氧化碳。 氢气。
对于工程结构的持久设计状况，应进行（）极限状态设计。 承载能力极限状态设计。 承载能力极限状态设计和正常使用极限状态设计。 正常使用极限状态设计。 根据需要进行承载能力极限状态设计。
You have a VPN server that runs Windows Server 2003 Service Pack 2 （SP2）. The VPN server is configured to have a static IP address pool. The IP address range is 10.10.10.1 to 10.10.10.200. All clients connect to the server by using PPTP.You discover that the VPN server supports only five concurrent VPN connections. You need to ensure that the VPN server supports 100 concurrent VPN connections. What should you do？（） From Network Interfaces，create a new demand-dial interface.。 From the properties of the server，disable multilink connections.。 From the port properties，configure the WAN Miniport（PPTP）device.。 From the properties of the server，configure the IP address assignment settings.。
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安全经济效益评价是安全投资经济性评价的指标之一，其定义应该是投资收益（）投资费用。
