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【单选题】
关于二度I型房窒传导阻滞的叙述,下列哪错误的A.
P-R间期逐渐延长至P波脱漏
B.
P波在aVR导联倒置，Ⅱ、aVF导联直立
C.
可见QRS波群脱漏
D.
房室传导可有一定比例
E.
P波规则出现
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