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
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相关考题
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单项选择题
If emergency welding repairs must be made to the upper area of a fuel tank, the tank and/or adjacent compartments may need to be （）
A.gas freed
B.inerted
C.filled with water
D.all of the above as necessary -
单项选择题
Which of the following statements is least likely to cause the ignition of fuel vapors?（）
A.Static electricity
B.An open running electric motor
C.Loose wiring
D.Explosion proof lights -
单项选择题
A burning AC motor would be considered what class of fire?（）
A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"
