What statement about Transit AS is true？（） ["Traffic and prefixes originating from Source AS are carried across a Transit AS to reach theirdestination AS","Traffic and prefixes originating from Transit AS are carried across a Stub AS to their destination AS","Traffic and prefixes originating from Transit AS are carried across a Stub AS to their Source AS","None of the above"]
电动叉车的维护保养周期比内燃叉车长2~3倍。
某投保人将某批货物分别向甲、乙两家保险公司投保了货物运输保险，其保险金额分别为：保险金额为20万元、30万元。保险事故发生时， 若发生部分损失，损失金额为10万元，则甲、乙两保险公司的赔偿金额分别为多少？
What are two benefits of using a single OSPF area network design?（） ["it reduces the number of required OSPF neighbor adjacencies","It reduces the types of LSAs that are generated","It is less CPU intensive for routers in the single area","It increases LSA response times.","It removes the need for virtual link"]
要求把人的心理看成是与人的社会实践活动密切联系的过程来考察和研究的原则是（）。 ["客观性原则","教育性原则","实践性原则","知识性原则"]
教学过程的心理准备阶段
