A . 肢体导联<0.25mV,胸前导联<0.15mVB . 肢体导联<0.20mV,胸前导联<0.25mVC . 肢体导联<0.25mV,胸前导联<0.25mVD . 肢体导联<0.25mV,胸前导联<0.20mVE . 肢体导联>0.25mV,胸前导联<0.20mV
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