Full access allows:
- Solve all tests online without limits;
- Remove all advertisements on website;
- Adding questions to favorite list;
- Save learning progress;
- Save results of practice exams;
- Watching all wrong answered questions.
76. When choosing extinguishers to fight a Class «B» fire do NOT use which type of extinguisher?
Water (cartridge-operated) extinguishers are unsuitable for Class B fires because they can spread flammable liquids, not extinguish them. Class B fires involve flammable liquids and gases, requiring smothering or chemical reaction interruption, which water does not provide; dry chemical, carbon dioxide, and foam extinguishers are appropriate for this purpose.
Comments (0)
There are no comments at the moment. If you found an error or think question is incorrect, tell everyone about it
Only signed in users can write comments
Signin