20.如图为人体血液循环模式图请据图完成以下问题1心脏分为四个腔心脏壁由心肌构成.2体循环相对于肺循环运输血液的距离较远所以 Template




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tomski20.如图为人体血液循环模式图请据图完成以下问题1心脏分为四个腔心脏壁由心肌构成.2体循环相对于肺循环运输血液的距离较远所以 coloring