Ventilation No. 3 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition)
Progress Indicator:
 
Question 2 of 20
2. The alarm system battery shall be replaced after __________ of use, every 6-months or after the alarm system low battery alarm flashes with corresponding horn sounding.
Choices:
- 100 hours
- 200 hours
- 50 hours
- 150 hours
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