血液经过肺循环后成分�生了变化其结果是 A.动脉血变成了静脉血b.废物变成了养料c.静脉血变成了动脉血d.没有�生任何变化 题目和 Template




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tomski血液经过肺循环后成分�生了变化其结果是 a.动脉血变成了静脉血b.废物变成了养料c.静脉血变成了动脉血d.没有�生任何变化 题目和 coloring