65.下圖之影像中,箭號所指的高回音區為下列何者?
(A)lateral shadow artifact
(B)reverberation artifact
(C)acoustic enhancement
(D)mirror effect
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統計: A(203), B(1159), C(537), D(96), E(0) #1383931
統計: A(203), B(1159), C(537), D(96), E(0) #1383931