我国少数民族自治地方占国土面积的（）以上。 ["40%","50%","60%","70%"]
杠杆租赁
电气化铁路相关作业人员“上岗证”中无年度安全考试记载痕迹，属于（）问题。 ["红线","A1","A2","B"]
各铁路运输企业收入管理，必须使用铁路总公司统一推广的计算机操作系统和（） ["通用应用软件","财务信息网络","统计信息网络","信息软件"]
Which of these is a valid differentiated services PHB？ （） ["Guaranteed PHB","Class-Selector PHB","Reserved Forwarding PHB","Discard Eligible PHB","Priority PHB"]
心理训练
