28 被動式標籤和讀取器之間的溝通和功率傳輸方法為何?
(A)回波散射耦合(Backscatter Coupling)
(B)主動式回波散射(Active Backscatter)
(C)極化(Polarization)
(D)阻抗平衡 (Impedance Balance)

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統計: A(324), B(50), C(9), D(16), E(0) #2014023