右图是血液循环和气体交换示意图请据图回答问题1图中心脏的四个腔中 的壁最厚在心房与心室间 心室与动脉间有 它的作用是 Template




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tomski右图是血液循环和气体交换示意图请据图回答问题1图中心脏的四个腔中 的壁最厚在心房与心室间 心室与动脉间有 coloring