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What is the core of the whole breathing process?
What is the core of the whole breathing process?
A.gas transpo
B.lung ventilation
C.lung ventilation
D.tissue ventilation
正确答案：tissue ventilation
标签：
动物解剖生理
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The walls of the alveoli are very thin. There is only （） cells with cubic secretory cells.
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In which of the following cases is the intrapulmonary pressure lower than atmospheric pressure when breathing quietly