正常情况下F波和M波的振幅比值为A.1%~3% B.1%~5% C.5%~1

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问题 正常情况下F波和M波的振幅比值为A.1%~3%B.1%~5%C.5%~10%D.11%~15%E.15%~20%

选项 A.1%~3%
B.1%~5%
C.5%~10%
D.11%~15%
E.15%~20%

答案 B

解析
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