下列不属于人体毛细血管特点的是a只能允许红细胞单行通过b管内有防止血液倒流的瓣膜c管内血流的速度最慢d管壁只由一层扁平上皮细胞构成 Template




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tomski下列不属于人体毛细血管特点的是a只能允许红细胞单行通过b管内有防止血液倒流的瓣膜c管内血流的速度最慢d管壁只由一层扁平上皮细胞构成 coloring