热力学图解中常用的T-lnP图上的干绝热线是根据（）画出的。
A. 湿绝热方程
B. 泊松方程
C. 假绝热方程
Which two Cisco Wireless Control System （WCS） statements are true？（）
A. the WCS Base version includes all the features of the WCS Location version as well as additional enhancements
B. the WCS Base version provides on-demand location of rogue access points and clients to within 33 feet （10 meters）
C. WCS adds a graphical view of multiple Cisco Wireless LAN controllers and managed access points
D. WCS includes a network management tool which is similar to a site survey tool
E. WCS uses the CDP protocol to communicate with the controller
带电灭火，应用不导电的灭火剂，如干粉灭火剂，不应使用（）进行灭火。
A. 四氯化碳
B. 二氧化碳
C. 1211
D. 泡沫灭火器
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