冬季遇雨雪天气，要及时清除连结处和车梯上的泥、雪、冰，防止滑跃。
表象
With PGP， which of the following entity signs a users’s public key？（） [" The sender of the message."," The receipient of the message."," The sender’s administrator who provides the sender with the PGP program."," A third party that belongs to what’s often known as "web of trust"， that can verify the relationship between the user and the key."," The vendor of the PGP program."]
The OSPF RFC 3623 Graceful Restart feature allows you to configure IETF NSF in ultivendor networks. When using OSPF Graceful Restart，which mechanism is used tocontinue forwarding packets during a switchover？（） ["Reverse Path Forwarding","Hardware-based forwarding","UDP forwarding","Layer 2 Forwarding"]
在1350OMS中执行同步网元的操作，下列哪些对象会被自动发现（） ["Ports","NAPs","Physical Connection","HO-Trails","Path"]
泓之战
