用力呼气时（）。A．膈肌舒张B．膈肌收缩C．肋间外肌舒张D．肋间外肌收缩

作者: rantiku 人气: - 评论: 0

问题用力呼气时（）。

选项 A．膈肌舒张 B．膈肌收缩 C．肋间外肌舒张 D．肋间外肌收缩

答案 BD

解析

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