You are developing an application that runs by using the credentials of the end user. Only users who are members of the Administrator group get permission to run the application. You write the following security code to protect sensitive data within the application.bool isAdmin=false； WindowsBuiltInRole role=WindowsBuiltInRole.Administrator； ...... if（!isAdmin） throw new Exception（"User not permitted"）； You need to add a code segment to this security code to ensure that the application throws an exception if a user is not a member of the Administrator group. Which code segment should you use？（） A。 B。 C。 D。
燃煤（Ⅱ烟煤）蒸汽、热水锅炉最低热效率为（）。 A.65% 。 B.70% 。 C.75% 。 D.78%。
《幽明录》
Your network contains a server named Server1. Server1 runs Windows Server 2008 R2 and has a single network connection. The connection is configured to use a default gateway address of 10.0.0.1.The default gateway has a metric value of 100.You configure a second default gateway that uses an address of 10.0.0.2.You need to ensure that 10.0.0.2 is only used as the default gateway if 10.0.0.1 is unreachable. What should you do？（） For the interface, set the interface metric to 100.。 For the 10.0.0.2 gateway, set the metric to 50.。 For the 10.0.0.2 gateway, set the metric to 200.。 For the 10.0.0.1 gateway and the 10.0.0.2 gateway, enable automatic metric.。
You are developing an ASP.NET Web page. The page contains the following markup. The pages code-behind file includes the following code segment. You need to get a reference to the Image named img. Which code segment should you add at line 06？（） Image img = （Image）Page.FindControl（"img"）；。 Image img = （Image）e.Row.FindControl（"img"）；。 Image img = （Image）gvModels.FindControl（"img"）；。 Image img = （Image）Page.Form.FindControl（"img"）；。
1992年春邓小平同志在南方谈话中明确提出了（）
