In BGP routing， what does the rule of synchronization mean？（） ["A BGP router can only advertise an EBGP learned route， provided that the route is an IGP route in the routing table.","A BGP router can only advertise an IBGP learned route， provided that the route is an IGP route in the routing table.","A BGP router can only advertise an IBGP learned route， provided that the route is an IGP route that is not in the routing table.","A BGP router can only advertise an EBGP learned route， provided that the route is a metric of 0 in the BGP table."]
焦虑
试述班级管理目标设定的依据。
下列指数中，（）是质量指标指数。 ["单位成本指数","工人人数指数","销售量指数","产品产量指数"]
旅客人身伤害事故中特别重大伤亡事故是指一次死亡（）人以上的事故。 ["10","20","30","40"]
第三者政府。
