下图为人体内肺部的气体交换图请据图回答1外包丰富的毛细血管仅由一层上皮细胞围成的�是肺部进行气体交换的基本单位其名称是 2 Template




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tomski下图为人体内肺部的气体交换图请据图回答1外包丰富的毛细血管仅由一层上皮细胞围成的�是肺部进行气体交换的基本单位其名称是 2 coloring