右图是人的血液循环路线示意图请回答下列问题1血液循环流动是在由 和 组成的封闭管道中进行的血液循环时体循环流经的途径是 ——青夏 Template




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tomski右图是人的血液循环路线示意图请回答下列问题1血液循环流动是在由 和 组成的封闭管道中进行的血液循环时体循环流经的途径是 coloring