When IPv6 is deployed by a Service Provider to bring on an IPv6 Enterprise， which transition strategyworks the best？（） ["Deploy IPv6 at the Edges and tunnel Enterprise through the core","Deploy IPv6 at Edges and Core at the same time for smooth transition","Deploy IPv6 at the core first and then move to Edges toward the end customer","None of the above will work"]
举例说明污染物对组织器官的影响。
Refer to the exhibit. When running OSPF, What would cause router A not to form an adjacency with router B?（） ["The loopback addresses are on different subnets","The value of the dead timers on the router are different","Route summarization is enabled on both routers","The process indentifier on router A is different than the process identifier on router B"]
简述间接知识与直接经验相结合的规律的主要观点。
下列属于无氧耐力运动项目的是（） ["骑单车","快走","200米游泳竞赛","登山"]
波形曲线
