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Your network contains a single Active Directory domain. All client computers run Windows Vista Service Pack 2 （SP2）. You need to prevent all users from running an application named App1.exe. Which Group Policy settings should you configure（） Application Compatibility。 AppLocker。 Software Installation。 Software Restriction Policie。
要想运行ASP网页，对于Windows2000以上的版本作为ASP服务器时，需要安装（） Dreamweaver。 PersonalWebServer。 IIS。 IIS和PWS。
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application. You add a DataGrid named gridContacts that is data-bound to a collection of Contacts. Each item has the ContactName and Phone properties. The DataGrid contains a column named ContactNameColumn that is bound to ContactName. You write the following code fragment. You need to ensure that the application meets the following requirements: Phone number is shown as a row detail when the row is selected. Only ContactName can be edited. What should you do?（）
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事故的预防原则有哪些？
氢气管道上应设防静电接地装置，接地电阻不应大于（）欧姆。
