设基带信号是最高频率为3.4 kHz的语音信号,则AM信号带宽为(),SSB信号带宽为(),DSB信号带宽为()。
参考答案:6.8kHz,3.4kHz,6.8kHz
Jim is fond of his present job. He must get a real ________ out of his work.
A.kick
B.pleasure
C.happiness
D.satisfaction
《郁离子》