图为肺泡与毛细血管之间的气体交换示意图下列说法正确的是 A.ab分别代表的物质是氧气和二氧化碳b.血液从毛细血管的4端流到5端后其 Template




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tomski图为肺泡与毛细血管之间的气体交换示意图下列说法正确的是 a.ab分别代表的物质是氧气和二氧化碳b.血液从毛细血管的4端流到5端后其 coloring