皮皮学，免费搜题
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【单选题】
心肌细胞分为快反应细胞和慢反应细胞的主要根据是其动作电位的
A.
动作电位0期去极化速度
B.
动作电位时程长短
C.
动作电位幅度大小
D.
动作电位复极化速度
E.
细胞4期（期）有无自动去极化
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