Emergencies & Hazards第 88 / 120 题
Which type of fire extinguisher should you use on an electrical fire in the cab?
a.A water extinguisher
b.A pressurized garden hose
c.A B:C rated extinguisher such as dry chemical or carbon dioxide
d.Any extinguisher, as long as it is full
解析
Electrical fires are Class C, so the agent must be non-conductive, which is why a B:C or A:B:C rated dry chemical or carbon dioxide unit is required. Water conducts electricity and can electrocute the user or spread the fire, and choosing an extinguisher by fullness alone ignores the class rating.
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