你负责管理一个SQL SERVER 2005数据库。它包含一个有很多索引的表。随着时间的流逝，你发现对这个表进行数据修改时的性能越来越差。你怀疑可能是一些无用索引造成的。为此，需要找到自从最后一次SQL Server 2005启动以来那些索引是没有被任何查询使用过。你应该使用下面哪一个动态试图？（） sys.dm_fts_index_population。 sys.dm_exec_query_stats。 sys.dm_db_index_usage_stats。 sys.dm_db_index_physical_stat。
Your company has a main office and a branch office. The network contains an Active Directory domain named contoso.com. The DNS zone for contoso.com is configured as an Active Directory-integrated zone and is replicated to all domain controllers in the domain. The main office contains a writable domain controller named DC1. The branch office contains a read- only domain controller （RODC） named RODC1. All domain controllers run Windows Server 2008 R2 and are configured as DNS servers. You uninstall the DNS server role from RODC1. You need to prevent DNS records from replicating to RODC1. What should you do（） Modify the replication scope for the contoso.com zone.。 Flush the DNS cache and enable cache locking on RODC1.。 Configure conditional forwarding for the contoso.com zone.。 Modify the zone transfer settings for the contoso.com zone.。
有老乡牵驹一匹，主诉：患病三日，发烧，不食，咳嗽，气喘，大小便正常。你被聘为兽医负责诊治，你将进行哪些主要检查？为什么？
创新性思维的表现形式有哪些？
最早使用“人民公仆”一词的是（） 但丁。 罗伯特斯尔。 马克思。 恩格斯。
You use Microsoft .NET Framework 4 to create a Windows Presentation Foundation (WPF) application.
You plan to create a window that has a layout as shown in the following exhibit.
You need to define the code fragment to create the window layout.
Which code fragment should you use?（）
