What is the difference between nature ventilation and mechanical ventilation?

Bronchotomy is a procedure by which the trachea is cut for ventilation. _____

The disadvantage of district ventilation is that there are many return air shafts and ventilation equipment.

The disadvantage of district ventilation is that there are many return air shafts and ventilation equipment. A: 正确 B: 错误

Smoke Exhaust and Ventilation System

中国大学MOOC: Ventilation

Except for lighting,it also could be used for ventilation. A: 通风 B: 采光 C: 阳光

should be used to improve local ventilation

Dead space like ventilation refer to () A: decrease<br/>of partial alveolar ventilation B: increase<br/>of partial alveolar VA/Q C: increase<br/>of partial alveolar ventilation D: decrease<br/>of partial alveolar VA/Q E: increase<br/>of anatomic shunt

Which of the following is not an advantage of central parallel ventilation?( ) A: The ventilation system is basically independent and safe B: Centralized layout of industrial sites C: Convenient management D: Less coal-pillar loss