单项选择题 You develop a service application that needs to be deployed. Your network administrator creates a specific user account for your service application.You need to configure your service application to run in the context of this specific user account. What should you do？（）
单项选择题 您最近向所有用户创建和部署使用.NET1.1CLR开发的应用程序，管理员更新所有用户的计算机并且安装了NET2.0CLR，运行初步测试并发现使用您创建的应用程序。网1.1CLR不兼容。NET2.0CLR。您需要确保可以与运行应用程序。网1.1CLR。你应该做什么？（）
单项选择题 You need to select a class that is optimized for key-based item retrieval from both small and large collections. Which class should you choose？（）
