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【单选题】
听诊心率正常而不整齐，可除外A.
第Ⅰ度房室传导阻滞
B.
心房颤动
C.
室性期前收缩
D.
第Ⅱ度I型房室传导阻滞
E.
伴有4:1和3:1房室传导比例的心房扑动
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
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