14.如图为人体血液与组织细胞之间的物质交换示意图请据图作答1图中所示血管为毛细血管.2该血管进行物质交换的特点数量多分布广 Template




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tomski14.如图为人体血液与组织细胞之间的物质交换示意图请据图作答1图中所示血管为毛细血管.2该血管进行物质交换的特点数量多分布广 coloring