[多选] 转换模式工具有（）两种 

下列选项中选出获取Photoshop联机帮助的方法有（） 通过双击工具条顶端的小图标。 通过按下F1键。 通过杳看相关书籍。 通过帮助菜单。 在windows环境中，指定活动窗口的方法是（）。 用鼠标单击该窗口内任意位置。 反复按Ctrl+Tab键。 把其他窗口都关闭，只留下一个窗口。 把其他窗口都最小化，只留下一个窗口。 Your company has an Active Directory domain that runs Windows Server 2008 R2. The Sales OU  contains an OU for Computers， an OU for Groups， and an OU for Users.   You perform nightly backups. An administrator deletes the Groups OU. You need to restore the  Groups OU without affecting users and computers in the Sales OU.     What should you do（） Perform an authoritative restore of the Sales OU.。 Perform an authoritative restore of the Groups OU.。 Perform a non-authoritative restore of the Groups OU.。 Perform a non-authoritative restore of the Sales OU.。 You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.   The application contains a composite user control that includes a TextBox control named txtInput.   The user control will be hosted in a window and will have handlers for the text-changed event of txtInput.  You need to ensure that the application meets the following requirements:  AddHandler(TextBox.TextChangedEvent, new RoutedEventHandler(Audit_TextChanged), true); Which of the following statments are TRUE ?（） A text-changed event handler, named Audit_TextChanged, was Created for the txtInput control.。 Audit_TextChanged will stop running because the event is marked as handled by certain event handlers.。 Even through the event is marked handled by certain event handlers, Audit_TextChanged will still run.。 Audit_TextChanged will continue to run until the event is marked as handled.。 下列哪一项是安全教育应有的特点？（） 长期性和短期性。 阶段性和成果性。 容易性与简单性。 专业性和科学性。 转换模式工具有（）两种