单项选择题

Which of the listed classes of fire is considered as one involving electrical equipment?（）

A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"

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单项选择题

Besides heat, fuel, and oxygen, which of the following is necessary for a fire to exist?（）

A.Chain reaction
B.Thermal action
C.Chemical occlusion
D.Pyrotechnical reaction

单项选择题

A fire and boat drill on a tank vessel shall, by regulation, include （）.

A.starting the fire pumps
B.checking firemans outfits and other personnel rescue equipment
C.checking relevant communications equipment
D.All of the above

单项选择题

A fire in an electrical generator is considered to be （）.

A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"