A.肢体导联<0.25mV,胸前导联<0.20mV
B.肢体导联<0.25mV,胸前导联<0.15mV
C.肢体导联<0.25mV,胸前导联<0.25mV
D.肢体导联<0.20mV,胸前导联<0.25mV
E.肢体导联>0.25mV,胸前导联<0.20mV