51.下列何種功能無法自超音波機器之面板上直接操作?
(A)Depth gain compensation(DGC)
(B)能量杜卜勒(power Doppler)強度
(C)灰階超音波之脈衝重複頻率(pulse repetition frequency)
(D)線性探頭之入射波角度
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統計: A(124), B(67), C(490), D(350), E(0) #1053006
統計: A(124), B(67), C(490), D(350), E(0) #1053006