The alveoli are polyhedral spheres with a gap on one side, which are connected with alveoli sac and alveoli duct.


The alveoli are polyhedral spheres with a gap on one side, which are connected with alveoli sac and alveoli duct.

A.正确

B.错误

正确答案:正确


Tag:动物解剖生理 时间:2021-12-25 22:23:00