阿摩線上測驗
16. AM radio signals differ from FM signals _____ are based on
amplification modulation rather than frequency modulation.
(A) in that
(B) that they in
(C) in that they
(D) that in
答案：登入後查看
統計： A(54), B(19), C(196), D(11), E(0) #2930126
統計： A(54), B(19), C(196), D(11), E(0) #2930126
