图中ab为人体内两种不同组织处的毛细血管���示某些营养物质.请据图回答1如果消化的产物�由a运输到b再由b进入组织细胞内的主要 Template




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tomski图中ab为人体内两种不同组织处的毛细血管���示某些营养物质.请据图回答1如果消化的产物�由a运输到b再由b进入组织细胞内的主要 coloring