You create a new ASP.NET MVC 2 Web application. The following default routes are created in the Global.asax.vb file.01 Shared Sub RegisterRoutes（ByVal routes As RouteCollection）02 03 routes.IgnoreRoute（"{resource}.axd/{*pathInfo}"）04 05 routes.MapRoute（ "Default"， "{controller}/{action}/{id}"， New With {.controller = "Home"， .action = "Index"， .id = ""}） 06 End Sub You implement a controller named HomeController that includes methods with the following signatures.Function Index（） As ActionResult Function Details（ByVal id As Integer） As ActionResultFunction DetailsByUsername（ ByVal username As String） As ActionResult You need to add a route to meet the following requirements. The details for a user must be displayed when a user name is entered as the path by invoking the DetailsByUsername action. User names can contain alphanumeric characters and underscores， and can be between 3 and 20 characters long.What should you do？（）
板材的仰焊操作技术最难掌握，不易产生理想的焊缝成型，下列操作规程中不正确的是（）。 ["仰焊时只能采用左焊法","当焊接开坡口工件时，应采用多层焊","严格控制好熔池温度和熔池大小","当焊接较厚工件时，应采用多层焊"]
关于甲型肝炎的诊断， 哪一说法是错误的：（） ["临床症状+大便分离出HAV可确诊为甲肝","抗-HAV-IgM阴性不可排除甲肝","临床症状+抗HAV-IgM阳性可确诊为甲肝","临床症状+抗-HAV升高四倍可确诊为甲肝","以上均不是"]
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塔式起重机维护保养分为（） ["日常维护保养","定期检修","大修","月检查保养"]
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