下图为人体局部血液循环示意图其中��是动脉血管�是毛细血管���内流动的均为动脉血则�的主要功能是a滤过作用b气体交换c Template




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tomski下图为人体局部血液循环示意图其中��是动脉血管�是毛细血管���内流动的均为动脉血则�的主要功能是a滤过作用b气体交换c coloring