如图是人的血液循环示意图请据图回答1图中a是体循环路线b是肺循环路线.2心脏中的血液由含氧多的动脉血变成含氧�的静脉血所经历的 Template




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tomski如图是人的血液循环示意图请据图回答1图中a是体循环路线b是肺循环路线.2心脏中的血液由含氧多的动脉血变成含氧�的静脉血所经历的 coloring