You work as a senior administrator at ABC.com. The ABC.com network consists of a single domain named ABC.com. All servers on the ABC.com network have Windows Server 2012 R2 installed， and all workstations have Windows 8 installed. You are running a training exercise for junior administrators.You are currently discussing a Windows PowerShell cmdlet that activates previously de-activated firewall rules. Which of the following is the cmdlet being discussed？（） Set-NetFirewallRule。 Enable-NetFirewallRule。 Set-NetIPsecRule。 Enable-NetIPsecRule。
汽车总体设计中汽车性能参数要确定哪些？
城镇燃气管道系统由各种压力的燃气管道组成，其组合形式有（）。 一级系统、两级系统。 一级系统、两级系统、三级系统。 一级系统、两级系统、三级系统、四级系统。
You have a DNS server that runs Windows Server 2003 Service Pack 2 (SP2). The server contains two zones named nwtraders.com and contoso.com. Nwtraders.com is configured as an Active Directory-integrated zone. Contoso.com is configured as a standard primary zone. You discover that stale resource records are not being removed from contoso.com. Stale resource records are being removed from nwtraders.com. You need to ensure that stale resource records are automatically removed from contoso.com. What should you do?（） Enable aging and scavenging on the contoso.com zone.。 Convert contoso.com to an Active Directory-integrated zone.。 From the start of authority （SOA） record for contoso.com， change the refresh interval.。 From the start of authority （SOA） record for contoso.com， change the TTL For This Record value.。
下列试剂中，使用时必须戴橡皮手套的是（）。 盐酸。 乙醇。 碘化钾。 硫酸。
胡锦涛同志所作的十八大报告，浓缩了改革开放以来特别是（）来党领导中国发展建设的经验与启示，勾画出中国未来发展的蓝图。
