Ventilation No. 3 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition)
Progress Indicator:
 
Question 3 of 20
3. How much of something else in the air will drop the oxygen level by one percent? p. 528
Choices:
- 25,000ppm
- 10,000ppm
- 50,000ppm
- 30,000ppm
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