单项选择题
A.QRS低电压 B.QT间期延长 C.病理性Q波 D.缺血性T波倒置 E.缺血性ST段压低
A.P波时限>0.12s B.PtfV1绝对值为0.05mm.s C.PⅡ、Ⅲ、aVF振幅≥0.25mv，P波高尖 D.Ⅱ、Ⅲ、aVF导联P波双峰，峰间距≥0.04s E.P波形态圆钝，振幅在肢导<0.25mv，胸导<0.2mv
A.0.12-0.20s B.0.10-0.20s C.0.06-0.08s D.0.32-0.44s E.0.08-0.24s