下列关于平静呼吸时胸内压变化的叙述,正确的是(   ) A. 吸气时

下列关于平静呼吸时胸内压变化的叙述,正确的是(  

A. 吸气时高于大气压      B. 呼气时高于大气压      C. 取决于呼吸方式

D. 吸气和呼气时均低于大气压       E. 吸气和呼气时均高于大气压

答案

D

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