单项选择题
A.Weight B.Temperature C.Electrical nonconductivity D.Cost
What is required in addition to the heat，fuel，and oxyge...
单项选择题What is required in addition to the heat，fuel，and oxygen of the fire triangle to have a fire?（）
A.Electricity B.Chain reaction C.Pressure D.Smoke
What is NOT listed on the metallic name plate required ...
单项选择题What is NOT listed on the metallic name plate required to be attached to hand portable fire extinguishers?（）
A.The rated capacity in gallons，quarts，or pounds B.The hydrostatic test date of the cylinder C.The name of the item D.An identifying mark of the actual manufacturer
What is NOT a characteristic of carbon dioxide fire-ext...
单项选择题What is NOT a characteristic of carbon dioxide fire-extinguishing agents?（）
A.Effective even if ventilation is not shut down B.Will not deteriorate in storage C.Non-corrosive D.Effective on electrical equipment
