单项选择题
A.water B.foam C.the range hood extinguishing system D.fire dampers
A fuel line breaks，sprays fuel on the hot exhaust manif...
单项选择题A fuel line breaks，sprays fuel on the hot exhaust manifold，and catches fire. Your FIRST action should be to（）.
A.batten down the engine room B.start the fire pump C.apply carbon dioxide to the fire D.shut off the fuel supply
A foam-type portable fire extinguisher would be most us...
单项选择题A foam-type portable fire extinguisher would be most useful in combating a fire in（）.
A.solid materials such as wood or bales of fiber B.flammable liquids C.a piece of electrical equipment D.combustible metallic solids
A foam-type portable fire extinguisher is most useful i...
单项选择题A foam-type portable fire extinguisher is most useful in fighting a fire in（）.
A.generators B.oil drums C.the bridge controls D.combustible metals
