每辆急救车与医师及护士配编比例为() ["A．1:2","B．1:3","C．1:4","D．1:5","E．1:6"] 院外急救城区急救半径应() ["A．≤3km","B．≤4km","C．≤5km","D．≤6km","E．≤7km"] 接到救护指令一般要求救护车开出医院的时间为() ["A．3min","B．4min","C．5min","D．6min","E．7min"] 评价急救中心的最主要的指标是() ["A．救护车数量","B．病源数量","C．反应时间","D．基础设施与规模","E．急救半径"] 我国目前在院外急救服务体系中最常用的运输工具是() ["A．飞机","B．救护车","C．卫生列车","D．卫生船","E．以上都不是"] 在市区10km区域以内要求救护车到达现场的时间为()