Which command retrieves and displays information about each Cisco product in the form of a UDI? （） [" show status"," show hardware"," show inventory"," show environment"]
下列哪项不是胸腔闭式引流的目的：（） ["重建负压使肺复张","开胸术后引流","平衡压力，防止纵膈移位","用于治疗已停止漏气的小量气胸","需要持续排气、排液、排脓者"]
Which two are elements of the operational-efficiency business challenge?（） [" improving business processes"," making existing resources more productive"," offering enhanced customer service"," providing flexible channel and delivery optio"]
The cisco wireless location appliance can track up to how many devices？（） ["1000","2000","2500","1500"]
安全评价中常用（）和参照事故类别的方法进行分类。 ["导致事故的直接原因","系统分析","导致事故的间接因素"]
简述企业现金流量分析。
