如图为心脏结构示意图请据图回答问题1心脏由 个腔构成其中收缩力最强的是� 与此相连的血管是 .2心脏内的血液只能由心房流入 Template




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tomski如图为心脏结构示意图请据图回答问题1心脏由 个腔构成其中收缩力最强的是� 与此相连的血管是 coloring