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
A: The ventilation system is basically independent and safe
B: Centralized layout of industrial sites
C: Convenient management
D: Less coal-pillar loss
A
举一反三
- Smoke Exhaust and Ventilation System
- Which of the following is primary function of mechanical ventilation? A: Maintain alveolar ventilation and correct hypoxemia B: Increase carbon dioxide C: Increase blood volume D: Maintain pulmonary blood flow
- Which of the following factors affect the evenness of the flock ( ) A: Feeding density B: Temperature C: Lighting D: Ventilation
- Which of the following about ventilation/perfusion ratio is wrong? A: normal value in quiet state is 0.84 B: decreasing of ventilation/perfusion ratio means that the alveolar ineffective cavity increases C: ratio in pulmonary bottom is the smallest D: in pulmonary embolism, the ratio increases
- What is the difference between nature ventilation and mechanical ventilation?
内容
- 0
The disadvantage of district ventilation is that there are many return air shafts and ventilation equipment.
- 1
Which of the<br/>following is correct regarding dead space-like ventilation () A: V/Q B: V/Q >0.8 C: V/Q= 0.8 D: none of the above
- 2
Which of the following children may have less hearing loss when they grow up?
- 3
Which of the following is the best index to judge the function of<br/>total alveolar ventilation? () A: Vital capacity B: AB (actual bicarbonate) C: Tidal volume D: PaO2 E: PaCO2
- 4
Which<br/>one is used to evaluate the efficiency of pulmonary ventilation? () A: tidal<br/>volume B: functional<br/>residual capacity C: vital<br/>capacity D: expiratory<br/>reserve volume E: alveolar<br/>ventilation