【简答题】People who enjoy (1) ______ would like the hiking tour.The river runs through the (2) ______ .Call the telephone number to (3) ______ your place.
【单选题】在ISO/OSI参考模型中,负责路由选择、拥塞控制的是( )
【单选题】—Who ______ in your class? —Li Lei _______. [ ]
【单选题】在OSI参考模型中,负责路由选择的是()
【多选题】以下属于城市轨道交通建筑物特点的是( )。