15.如图所示甲图是人体心脏剖面图乙图中图一是人体内三种血管的关系示意图图二表示血液流经血管前后气体含量的变化丙图为人体部分血液循环 Template




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tomski15.如图所示甲图是人体心脏剖面图乙图中图一是人体内三种血管的关系示意图图二表示血液流经血管前后气体含量的变化丙图为人体部分血液循环 coloring