图是血液流经某器官的示意图ac表示血管箭头表示血液流动方�若c血管内流动脉血你认为b结构可能代表的是 �大� �肺部 �小肠绒毛 Template




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tomski图是血液流经某器官的示意图ac表示血管箭头表示血液流动方�若c血管内流动脉血你认为b结构可能代表的是 �大� �肺部 coloring