单项选择题 You work as the application developer at Certkiller .com. Certkiller .com uses Visual Studio.NET 2005 as its application development platform. You are developing a Windows Service application. You need to change the security context in which the service runs. The service will be run in context of a non-privileged user on the local computer and present anonymous credentials to any remote server. You are required to set the Account property of the ServiceProcessInstaller class to specify the service account. What should you do?（）

单项选择题 为应用程序开发人员上班 Certkiller。 com。Certkiller.com 作为其应用程序使用 Visual Studio.NET 2005开发平台。您正在开发。NET Framework 2.0 应用程序将用于地理的映射。每当您加载插件的创建单独的应用程序域。要指定搜索的目录列表私有程序集。您需要将应用程序基目录添加为部件,您的搜索和需要配置应用程序域满足要求 （）

单项选择题 You define the following regular expression of currency values: regex tx = new regex("^-?\d+(\.\d{2})?$") You are required to write code that will be used to find whether a string in the variable named Bill matches the regular expression or not. You are also required to use this code as the expression in a conditional statement and need to know which code segment to use. What should you do?（）