42.下列之心電圖,何者之敘述正確: ①心軸偏左(left axis deviation) ②第一級房室傳導阻滯(first degree AV block) ③竇性節律(sinus rhythm ) ④左束支傳導阻滯(left bundle branch block) (A)①②③ (B)①②④ (C)①③④ (D)②③④
42.下列之心電圖,何者之敘述正確: ①心軸偏左(leftaxis devia..-阿摩線上測驗