如下图所示下列说法正确的 aabc分别表示动脉毛细血管静脉ba血管血流速度快管壁厚弹性大cb血管的结构适于物质交换dc血管将血液送回心脏——青夏教育精英家教�—— Template




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tomski如下图所示下列说法正确的 aabc分别表示动脉毛细血管静脉ba血管血流速度快管壁厚弹性大cb血管的结构适于物质交换dc血管将血液送回心脏——青夏教育精英家教�—— coloring