皮皮学,免费搜题
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【多选题】
心律失常发生的电生理学机制是:
A.
自律性增高
B.
早后除极与触发活动
C.
除极与触发活动
D.
单纯性传导障碍
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A.
正确
B.
错误
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A.
正确
B.
错误
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【简答题】生态平衡(ecological equilibrium)
【单选题】中苏关系在()过渡为中俄关系。
A.
1949年10月2日
B.
1950年2月14日
C.
1991年12月25日
D.
1992年8月1日
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