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- Master (Oceans or Near Coastal (Uninspected Fishing Industry Vessel)) »
- Q181 - Deck Safety
61. An «ABC» dry chemical fire extinguisher would be LEAST effective against a fire in __________.
ABC dry chemical extinguishers are less effective on deep-seated Class A fires, such as those involving mattresses, because they primarily coat the surface and lack the cooling ability of water or foam.
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