12.如图为人体部分血液循环示意图据图回答1若图中�表示肺部毛细血管该处毛细血管有利于气体交换的分布特点是肺泡外缠绕大量的毛细血管或 Template




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tomski12.如图为人体部分血液循环示意图据图回答1若图中�表示肺部毛细血管该处毛细血管有利于气体交换的分布特点是肺泡外缠绕大量的毛细血管或 coloring