下图为人体血液循环过程模式图请据图回答下列问题1上图所示四条血管中流动着静脉血的有肺动脉和上下腔静脉肺动脉和上下腔静脉.2若静脉 Template


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tomski下图为人体血液循环过程模式图请据图回答下列问题1上图所示四条血管中流动着静脉血的有肺动脉和上下腔静脉肺动脉和上下腔静脉.2若静脉 coloring