单项选择题
A.class A B.class B C.class C D.class D
Which of the listed classes of fire is considered as on...
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"
Besides heat, fuel, and oxygen, which of the following ...
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
A fire and boat drill on a tank vessel shall, by regula...
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
