如图表示肺泡处的气体交换示意图ab表示血管其内箭头表示血流方�下列有关叙述中正确的是 A.a为肺静脉其内流动脉血 B.b为肺 Template




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tomski如图表示肺泡处的气体交换示意图ab表示血管其内箭头表示血流方�下列有关叙述中正确的是 a.a为肺静脉其内流动脉血 b.b为肺 coloring