单项选择题
A.boiling point B.flash point C.viscosity point D.toxic point
An example of class "A" fire is a/an （）.A.electrical fi...
单项选择题An example of class "A" fire is a/an （）.
A.electrical fire in the engine room B.oil fire in the engine room bilges C.oil fire involving a grade "A" petroleum product D.mattress fire in a stateroom
The most common type of containment device for spilled ...
单项选择题The most common type of containment device for spilled oil on the water is the use of （）.
A.straw B.booms C.skimmers D.chemical dispersants
A tank has been sealed and unventilated for a long peri...
单项选择题A tank has been sealed and unventilated for a long period of timeWhich of the following conditions does this indicate?（）
A.The tank is safe to enter B.The tank is especially dangerous to enter C.Carbon monoxide is present D.Water vapor present when the tank was sealed has oxidized
