【单选题】【消耗次数：1】
肺的通气/血流比值反映肺部气体交换的气泵与血泵的匹配情况。如果通气<span style=FONT-FAMILY: Tim
①
解剖无效腔增大
②
肺泡无效腔增大
③
解剖动 - 静脉短路
④
功能性动 - 静脉短路
⑤
肺内气体交换障碍
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