右图为肺的内部结构示意图请分析回答11代表 2代表 .2假设血液由a流�b处则ab两处血液成分的主要区别是 .b处 Template




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tomski右图为肺的内部结构示意图请分析回答11代表 2代表 .2假设血液由a流�b处则ab两处血液成分的主要区别是 coloring