单项选择题
What is the most vulnerable part of the fire main system on board an offshore rig?（）
A.The fire pump
B.Exposed hard piping
C.The hydrant valve
D.The fire hose
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相关考题
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单项选择题
What is the MOST important consideration when determining how to fight an electrical fire?（）
A.Whether the fire is in machinery or passenger spaces
B.Danger of shock to personnel
C.The amount of toxic fumes created by the extinguisher
D.Maintaining electrical power -
单项选择题
What is the most important characteristic of the extinguishing agent in fighting a class C fire?（）
A.Weight
B.Temperature
C.Electrical nonconductivity
D.Cost -
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
