š Key Concepts
ā¢ The fire classification system (Class A, B, C, D, K) and what each class represents
ā¢ The difference between ordinary combustibles, flammable liquids, and combustible metals
ā¢ Typical examples used on U.S. Coast Guard exams for Class B fires
š Think About
ā¢ First, match each answer choice (paper, diesel oil, wood, magnesium) to the type of material it is (solid combustible, liquid fuel, metal, etc.).
ā¢ Recall which fire class is associated specifically with flammable and combustible liquids.
ā¢ Think about what type of portable fire extinguisher (by class letter) you would normally use on something like fuel or oil fires on a vessel.
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Before You Answer
ā¢ Verify which fire class is defined as involving flammable or combustible liquids and gases.
ā¢ Confirm which of the listed materials is normally found in liquid form and used as a fuel on vessels.
ā¢ Eliminate the materials that clearly match Class A (ordinary combustibles) and Class D (combustible metals) before deciding.