147. ADSL 將頻寬分割為上行及下行頻寬，為利用下列那一種方法？
(A)FDM(Frequency Division Multiplexing)
(B)ADM(Add/Drop Multiplexing)
(C)ATDM(Asynchronous Time Division Multiplexing)
(D)WDM (WaveformDivision Multiplexing) 。

答案：登入後查看
統計： A(1), B(0), C(0), D(0), E(0) #3799108