单项选择题
正常人PR间期()
A.0.12-0.20s
B.0.10-0.20s
C.0.06-0.08s
D.0.32-0.44s
E.0.08-0.24s
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单项选择题
A.0.12-0.20s
B.0.10-0.20s
C.0.06-0.08s
D.0.32-0.44s
E.0.08-0.24s
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