图是人体内血液与组织细胞之间的气体交换示意图.请据图回答下列问题1图中所示血管是 血管你的判断理由是 .2图中x表示的气体是 Y Template




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tomski图是人体内血液与组织细胞之间的气体交换示意图.请据图回答下列问题1图中所示血管是 血管你的判断理由是 .2图中x表示的气体是 coloring