古猿
Which two commands are required to enable multicast on a router， knowing that the receivers only supports IGMPv2？（） ["IP PIM RP-address","IP PIM ssm","IP PIM Sparse-mode","IP PIM Passive"]
药箱在列车途中（）负责管理使用。 ["列车长","业务员","红十字救护员","乘警"]
与情报资料检索效率的查准率关系十分密切的是（） ["情报检索语言的规范化程度","检索人员的素质","检索词的专指度","标引的网络度"]
HCM中规定，（）为描述交通流内的运行条件及其影响驾驶员与乘客感受的一种质量标准。 ["服务等级","服务能力","通行能力","服务水平"]
波后
