单项选择题
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
A fire in an electrical generator is considered to be （...
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"
A fire may be spread by which of the following means?（）...
单项选择题A fire may be spread by which of the following means?（）
A.Conduction of heat to adjacent surfaces B.Direct radiation C.Convection D.All of the above
