题目内容：
窦房结细胞的电生理特性是
A．0期去极化速度快 B．传导速度快
C．收缩速度慢
D．自律性高
E．复极化快
参考答案：
答案解析：
单选题：窦房结细胞的电生理特性是
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B．传导速度快
C．收缩速度慢
D．自律性高
E．复极化快
B．传导速度快
C．收缩速度慢
D．自律性高
E．复极化快
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