下图为身体某部位血管示意图箭头表示血流方� 1如果a和c中流动的都是动脉血那么b代表的结构是 2如果a中流动的是静脉血c中 Template




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tomski下图为身体某部位血管示意图箭头表示血流方� 1如果a和c中流动的都是动脉血那么b代表的结构是 2如果a中流动的是静脉血c中 coloring