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