经常性检查应根据工作繁重、环境恶劣的程度确定检查周期，但不得少于（）一次。 1月。 2月。 1.5月。 2.5月。
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 .NET Framework 2.0 application used to store a type-safe list of names and e-mail addresses. The list will be populated all at ones from the sorted data which means you well not always need to perform insertion or deletion operations on the data. You are required to choose a data structure that optimizes memory use and has good performance.What should you do？（） The System.Collections.Generic.SortedList class should be used。 The System.Collections.HashTable class should be used。 The System.Collections.Generic.SortedDictionary class should be used。 The System.Collections.SortedList class should be used。
群落中植物的重要值是指植物的（）、（）和（）的综合。
Your network uses IPv4.You install a server that runs Windows Server 2008 at a branch office.The server is configured with two network interfaces. You need to configure routing on the server at the branch office.Which two actions should you perform？ （Each correct answer presents part of the solution.（） Install the Routing and Remote Access Services role service.。 Run the netsh ras ip set access ALL command.。 Run the netsh interface ipv4 enable command.。 Enable the IPv4 Router Routing and Remote Access option.。
张力性气胸常见于（） 肋骨骨折。 胸壁挫伤。 胸壁贯通伤。 肺裂伤。 支气管损伤。
You are implementing an ASP.NET MVC 2 Web application that allows users to view and edit data. You need to ensure that only logged-in users can access the Edit action of the controller. What are two possible attributes that you can add to the Edit action to achieve this goal？ （）
