28.試問下列何者不是超音波聲束產生器(beam former)內的元件?
(A)脈衝產生器(pulser)
(B)傳輸/接收開關(transmit/receive switch)
(C)類比-數位轉換器(analog-to-digital converter)
(D)影像處理器(image processor)
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統計: A(39), B(66), C(217), D(1005), E(0) #1050507
統計: A(39), B(66), C(217), D(1005), E(0) #1050507