Bronchotomy is a procedure by which the trachea is cut for ventilation. _____
举一反三
- Ventilation in birds is accomplished by expansion and contraction of the ( ). A: air sacs B: trachea C: lungs D: diaphragm E: air capillaries
- Which of the following is part of the procedure in note-taking？
- Which one is the correct procedure of price negotiation?
- 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
- Which procedure is recommended to prevent or overcome spatial disorientation? （ ）