Refer to the exhibit. All routers have Protocol Independent Multicast (PIM) enabled interfaces. On the basis of the configuration provided on routers R1 and R2, which router will take on the func tion of rendezvous point (RP) for the multicast network? （） [" both routers R1 and R2"," router R1"," router R2"," none of the routers since they are not configured with static RP"]
毛泽东认为，党风建设的核心问题是坚持（）。 ["从群众中来，到群众中去","全心全意为人民服务C","坚决打击腐败","以经济建设为中心"]
新石器时代（NeolithicAge）
根据《合同法》规定，提供格式条款一方（）的，该条款无效。 ["减轻自己的责任","免除对方的责任","加重对方的责任","加重自己的责任"]
简述常见的心理防御机制。
构成一个决策问题通常应具备哪几个条件？
