男性,45岁,上腹不适、恶心,3小时前突然呕出大量鲜血,并有心悸,大汗,面色苍,急诊入院。查体:神清,心率120次/分,血压80/60mmHg。肝肋下未及,脾肋下4指,肝掌(+)。实验室检查:Hb78g/L,WBC4×10/L,PLT45×10/L,TBiL89μmol/L。最有助于明确呕血病因的检查是()
A. 腹部B超检查
B. 肝功能检查
C. 胃镜检查
D. 上腹部CT检查
E. 同位素心肝血流比检查
Your network contains an Active Directory domain named contoso.com. The contoso.com DNS zone is stored in Active Directory. All domain controllers run Windows Server 2008 R2. You need to identify if all of the DNS records used for Active Directory replication are correctly registered. What should you do()
A. From the command prompt, use netsh.exe.
B. From the command prompt, use dnslint.exe.
C. From the Active Directory Module for Windows PowerShell, run the Get-ADRootDSE cmdlet.
D. From the Active Directory Module for Windows PowerShell, run the Get-ADDomainController cmdlet.