如图是人体部分生理活动示意图请据图回答下列问题.1心脏主要由心肌构成分为四个腔其中心肌最�达的是左心室.2肺泡与外界进行气体交换 Template




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tomski如图是人体部分生理活动示意图请据图回答下列问题.1心脏主要由心肌构成分为四个腔其中心肌最�达的是左心室.2肺泡与外界进行气体交换 coloring