登临咏怀是宋代词人（）词作的重要题材，《永遇乐·京口北固亭怀古》、《水龙吟·过南剑双溪楼》即是这一类代表作。
系统发生事故时，事故单位调度对象应立即向值班调度员汇报已发生事故，经检查后，再汇报哪些情况？
The switched LAN is displayed below： In this network， STP has been implemented. Switch SW1 is the root switch for the default VLAN.To reduce the broadcast domain， the network administrator decides to split users on the networkinto VLAN 2 and VLAN 10. The administrator issues the command spanning-tree vlan 2 rootprimary on switch SW1. What will happen as a result of this change？（） ["Switch SW1 will change its spanning tree priority to become root for VLAN 2 only","All ports of the root switch SW1 will remain in forwarding mode throughout the reconvergenceof the spanning tree domain","No other switch in the network will be able to become root as long as switch SW1 is up andrunning","Switch SW1 will remain root for the default VLAN and will become root for VLAN 2","None of the other alternatives apply"]
Your company has an Active Directory domain. You install an Enterprise Root certification authority （CA） on a member server named Server1. You need to ensure that only the Security Manager is authorized to revoke certificates that are supplied by Server1. What should you do（） ["Remove the Request Certificates permission from the Domain Users group.","Remove the Request Certificated permission from the Authenticated Users group.","Assign the Allow - Manage CA permission toonly the Security Manager user Account.","Assign the Allow - Issue and Manage Certificates permission to only the Security Manger user account"]
教育理论研究的特点是什么？
用人单位必须建立哪些劳动安全卫生制度?
