县级公安机关立案侦办下列哪些经济犯罪案件，应当报市级经侦部门审批（） ["直接经济损失30万元以上","直接经济损失50万元以上","涉外案件","涉案金额50万元以上"]
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"]
简述气血的主要功能。
The cisco wireless location appliance can track up to how many devices？（） ["1000","2000","2500","1500"]
共晶体
