29 下列之心電圖誘導電極,何者屬於雙極標準誘導(bipolar standard leads)?
(A)V1
(B)aVR
(C)Ⅱ導
(D)食道誘導(Esophageal leads)

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統計: A(1), B(17), C(145), D(2), E(0) #1230104