设置宽度为60像素（）设置高度为60像素（）文本水平居中对齐（） 设置字号为60像素（）设置文字颜色为白色（） height：60px；。 text-align：center；。 color：#FFF；。 width：60px；。 font-size：60px；。
千分表的测量精度为0.001（） mm。 cm。 m。
You are creating an application using Visual Studio 2010. The application consumes a Windows Communication Foundation (WCF) service.You are adding a service reference to the WCF service. You need to ensure that the generated proxy does not block the calling thread when executing a service method. What should you do when adding the service reference? （） Set the Collection type to ObservableCollection.。 Select the Reuse types in all referenced assemblies option.。 Select the Generate asynchronous operations option.。 Select the Always generate message contracts option.。
Your company has a server that runs Windows Server 2008 R2. Active Directory Certificate Services （AD CS） is configured as a standalone Certification Authority （CA） on the server. You need to audit changes to the CA configuration settings and the CA security settings. Which two tasks should you perform（） Configure auditing in the Certification Authority snap-in.。 Enable auditing of successful and failed attempts to change permissions on files in the %SYSTEM32%\CertSrv directory.。 Enable auditing of successful and failed attempts to write to files in the %SYSTEM32%\CertLog directory.。 Enable the Audit object access setting in the Local Security Policy for the Active Directory Certificate Services （AD CS） server.。
You develop a Windows Communication Foundation (WCF) service. It is used exclusively as an intranet application and is currently unsecured. You need to ensure that the service meets the following requirements: The service now must be exposed as an Internet application. The service must be secured at the transport level. Impersonation and delegation cannot be enabled. What should you use? （） basicHttpBinding and HTTP。 basicHttpBinding and Kerberos。 wsHttpBinding and Kerberos。 wsHttpBinding and HTTPS。
您在Hi-tech.com做应用程序开发。您正在编写类名为MyDictionary的自定义字典。您需要确保该字典是类型安全的字典。您应该使用哪个代码段？（）
