单项选择题
A.正常P波圆钝平滑,时间在0.06~0.10s之间,电压:肢体导联不超过0.25mV,胸导联不超过0.2mV
B.正常P波高尖,时间在0.06~0.10s之间,电压:肢体导联大于0.25mV,胸导联大于0.2mV
C.正常P波宽大,时间在0.12~0.20s之间,电压:肢体导联不超过0.25mV,胸导联不超过0.2mV
D.正常P波低平,时间在0.6~1.0s之间,电压:肢体导联不超过0.25mV,胸导联不超过0.2mV
E.正常P波呈双峰,时间在1.2~2.0s之间,电压:肢体导联超过0.25mV,胸导联常规0.02mV