题目内容
有关胸内压的说法,恰当的是()
2021-11-30
A.胸膜腔内有少量气体
B.呼气时胸内压等于大气压
C.气朐时胸内压为负压
D.用力吸气时胸内压是正压
E.胸内压的大小由肺回缩力决定
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