34.下列何者無法有效消除疊影(aliasing)?
(A)位移基線(shift the baseline)
(B)減小都卜勒角度
(C)減小脈衝重複週期(pulse repetition period,PRP)
(D)降低工作頻率
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統計: A(55), B(371), C(234), D(198), E(0) #1063980
統計: A(55), B(371), C(234), D(198), E(0) #1063980