下列是毛细血管的特点其中与物质交换无直接关系的是 A.连接最小的动脉和静脉b.管径小只允许红细胞单行通过c.管内血流速度极慢d.管壁薄 Template




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tomski下列是毛细血管的特点其中与物质交换无直接关系的是 a.连接最小的动脉和静脉b.管径小只允许红细胞单行通过c.管内血流速度极慢d.管壁薄 coloring