简述市盈率乘数法的基本思路
What must be true about the client before upstream traffic stream metrics can be displayed on the Cisco WLC?（） ["must be Cisco Compatible Extensions version 2","must be Cisco Compatible Extensions version 3","must be Cisco Compatible Extensions version 4","must be associated to a Platinum QoS WLAN","must be associated to an access point on a Cisco WLC with code version 5.0 or newer"]
人机工程中，一般以（）为以据设计视觉显示器等有关部件，以减少人眼的疲劳。 ["静视野","动视野","注视野","综合视野"]
资产收益率是反映上市公司（）的指标。 ["获利能力","经营能力","偿债能力","资本结构"]
卧式容器支座主要有（）三种 ["鞍式","圈座","支承式","裙式"]
哀牢
