根据右图回答问题 1图示血管的结构特点是管壁只有一层 细胞构成有利于进行物质交换经过物质交换后从该血管流出的是 血2红细胞 Template




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tomski根据右图回答问题 1图示血管的结构特点是管壁只有一层 细胞构成有利于进行物质交换经过物质交换后从该血管流出的是 coloring