1.[]窦性P波正常的时限、振幅是A.时限小于等于0.10s，肢体导联大于等于0.25mV，胸前导联小于等于0.20mV B.时限小于等于0.12s，肢体导联小于0.20mV，胸前导联小于0.25mV C.时限小于0.10s，肢体导联小于等于0.25mV，胸前导联小于等于0.25mV D.时限小于0.11s，肢体导联小于等于0.25mV，胸前导联小于等于0.20mVE.小于等于0.1ls，肢体导联小于等于0.25mV，胸前导联小于等于0.15mVABCDE
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参考答案：D
参考解析：窦性P波的正常时限应小于等于0.11s，时大于0.12s为异常。P波时限的延长多见于心房扩大，或房间传导延迟。正常窦性P波的振幅为肢导联小于等于0.25mV，胸前导联小于等于0.15mV。肢体导联Ⅱ、Ⅲ、aⅦ大于0.25mV时，称肺性P波。