右图是血液循环和气体交换示意图请据图回答问题 1肺泡与外界环境进行气体交换是通过 实 现的肺泡中的氧气是通过 作用进入血液的 2 Template




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tomski右图是血液循环和气体交换示意图请据图回答问题 1肺泡与外界环境进行气体交换是通过 实 coloring