单项选择题
成人P–P间期正常值是().
A.0.09~0.22s
B.0.10~0.20s
C.0.12~0.20s
D.0.08~0.20s
E.0.11~0.20s
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单项选择题
A.0.09~0.22s
B.0.10~0.20s
C.0.12~0.20s
D.0.08~0.20s
E.0.11~0.20s
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