In an outdoor bridge link， what is calculated by using this formula： transmitter power + antennagain - insertion OR cable loss（）？ ["Fresnel zone","SNR","SLR","PoE","EIRP"]
在全部或部分带电盘上进行工作时，应将（）与（）以明显标志隔开。
How can mobile devices and wireless networks be secured？（） [" by securely deploying new applications with appropriate performance levels"," by providing security that is based on a multilayer，system-level approach"," by looking subjectively at network traffic for abnormal flows"," by requiring a host-based hardware applicatio"]
胀缝应按如下原则设置不正确的是（） ["冬季施工时，胀缝一般每100m～150m设一道","与固定构筑物相接处应设置胀缝","市道路交叉口各向切点处需设置胀缝","夏季施工时，如板厚不小于20cm，可不设胀缝，其他情况施工时一般每250m～300m设置一道"]
When surveying for VoWLAN， which power level should you base the access point coverage designon？（） ["40mW maximum transmit power","average power level of the VoWLAN clients","100mW transmit power","lowest power level of the VoWLAN client"]
离异晶体
