问题: 正常成人心电图,下列哪项为异常
A: P波时限0.06~0.10s
B:P—R间期0.12~0.20s
C:QRS波群时限0.06~0.10s
D:Q—T间期0.60s
E:ST段任何导联上抬均<0.1mV
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