频率容限是发射设备的重要指标,通常用下述单位来表示:()
A、dbB
暂无解析
Nowadaysitismoreconvenientandeasierforpeopletotraveltoothercountries.Doyouthinkthepositiveeffectsexceedthenegativeeffects?
Whatmakesameetingeffective?
Whatisthemainadvantageofradioads:()
Moreandmorecompaniesareallowingemployeestoworkathome.Doyouthinkthisisapositiveornegativedevelopment?
孩子应该学会如何对自己的钱负责。乱花钱必然面临严重后果。