如图为肺泡内的气体交换示意图请据图回答下列问题.1肺泡�围包裹着丰富的� .2当血液流经�时血液中的 扩散到肺泡内该过程在图 Template




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tomski如图为肺泡内的气体交换示意图请据图回答下列问题.1肺泡�围包裹着丰富的� .2当血液流经�时血液中的 扩散到肺泡内该过程在图 coloring