When will the primary processor core dump run in case of a switchover？（） ["never takes place","periodically","during switchover","after switchover","before switchover"]
公共轨道交通客运能力取决于：（1）车辆尺寸和列车―车站长度和（） ["按计划安排的运营政策决定的站立乘客数","营运里程和营业时间","年平均最大客流量","列车之间的最小车头时距"]
（）表示单位投资额每年获得的报酬，是一项反映投资获利能力相对数的指标。 [" 净现值"," 会计收益率"," 获利指数"," 内部收益率"]
Which one of the following is NOT a valid RADIUS packet type？（） [" Access-reject"," Access-response"," Access-challenge"," Access-reply"," Access-accept"]
设备所使用的润滑剂、冷却剂等不得对药品或容器造成（），关键设备尽可能不用或少用润滑剂，确实需要，应采用有效措施（）污染药品或容器，并尽量采用（）的润滑剂。
什么是现代学校制度？
