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【单选题】
,心率94次/分,体检时发现其吸气时心率增快,呼气时心率减慢,心尖部有舒张期杂音,心底部第一二心音。反映有病理变化的特征是( )A.
心率
B.
心律
C.
呼吸
D.
杂音
E.
第二心音
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A.
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D
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