男性,74岁。右膝肿痛20天来院就诊。无外伤史,上下楼时疼痛加重,蹲下起立困难,查体可见右膝无畸形,内侧略肿胀,局部不红不热。X线检查示双髁间嵴骨质增生,膝关节内侧间隙略变窄,结论为右膝关节退变。该患者需与下列哪些疾病鉴别诊断()
A. 风湿性关节炎
B. 腰椎管狭窄
C. 痛风关节炎
D. 骨折
E. 骨肿瘤
F. 滑膜炎
Your network contains an Active Directory domain controller named DC1. DDC1 runs Windows Server 2008 R2. You need to defragment the Active Directory database on DC1. The solution must minimize downtime on DC1. What should you do first()
At the command prompt, run net stop ntds.
B. At the command prompt, run net stop netlogon.
C. Restart DC1 in Safe Mode.
D. Restart DC1 in Directory Services Restore Mode (DSRM).