【单选题】( ) is one of the oldest and simplest forms of modulation used for analog signals.
【单选题】The modulation mode on VHF Radiotelephone is ______.
A.
Frequency/Phase Modulation
B.
Single Side Band Modulation
【单选题】In the modulation style. of PSK, if a kind of Modem's modulation rate is 3200baud and it's phase is 8, what is the data transfer rate of this kind of Modem ?
【判断题】Frequency modulation and phase modulation are called angle modulation. ( )
【单选题】由于不动产的( )特性使得不动产市场具有地区性,不动产市场供给和需求局限于一定的空间范围内。
【判断题】Angle modulation includes frequency modulation and phase modulation.