白居易前、后期思想变化对他的诗歌创作有何影响？试举例说明。
生物的大环境包括（）、（）和（）。
Your company has several branch offices. Your network consists of a single Active Directory domain. Each branch office contains domain controllers and member servers. The domain controllers run Windows Server 2003 SP2. The member servers run Windows Server 2008 R2. Physical security of the servers at the branch offices is a concern. You plan to implement Windows BitLocker Drive Encryption （BitLocker） on the member servers. You need to ensure that you can access the BitLocker volume if the BitLocker keys are corruptedon the member servers. The recovery information must be stored in a central location. What should you do？（） Upgrade all domain controllers to Windows Server 2008 R2.Use Group Policy to configure Public Key policies.。 Upgrade all domain controllers to Windows Server 2008 R2. Use Group Policy to enable Trusted platform Module（TPM） backups to Active Directory.。 Upgrade the domain controller that has the schema master role to Windows Server 2008 R2. Use group Policy to enable a Data Recovery Agent （DRA）.。 Upgrade the domain controller that has the primary domain controller （PDC） emulator role to windows Server 2008 R2. Use Group Policy to enable a Data Recovery Agent （DRA）.。
You are developing a Windows Communication Foundation (WCF) service. The service needs to access out-of-process resources.You need to ensure that the service accesses these resources on behalf of the originating caller. What should you do?（） Set the value of ServiceSecurityContext.Current.WindowsIdentity.ImpersonationLevel to TokenlmpersonationLevel.Impersonation。 Set the value of ServiceSecurityContext.Current.Windowsldentity.ImpersonationLevel to TokenlmpersonationLevel.Delegation。 Set the PrincipalPermissionAttribute on the service contract and update the binding attribute in the endpoint element of the configuration file to wsHttpBinding。 Set the PnncipalPermissionAttribute on the service contract and update the bindingConfiguration attribute in the endpoint element of the configuration file to wsHttpBinding。
形式意义上的婚姻家庭法
Certkiller。COM命名esite4现有的Active Directory站点。您创建一个新的Active Directory站点和它命名esite5。要配置之间esite4和esite5的Active Directory复制，安装一个新的域控制器和esite4和esite5之间创建站点链接。下一步你应该怎么做来实现这一任务呢（）
