52. A galley grease fire would be classified as __________.

Grease fires involve flammable liquids like cooking oils, classifying them as Class B fires. Fire classes categorize fires based on fuel type: Class A for ordinary combustibles, Class B for flammable liquids and grease, Class C for energized electrical equipment, and Class D for combustible metals. The fire's classification is determined by the burning fuel, not the ignition source, and water should not be used on Class B fires.