单项选择题
A.absorb the oil for easy removal B.remove the oil from the water C.disperse or dissolve the oil in the water D.not affect the oil
Why is it necessary to warn engine room personnel befor...
单项选择题Why is it necessary to warn engine room personnel before activating the fixed CO2 system?（）
A.To make them aware there is a fire B.To let them know they should leave the engine room C.To prevent possible injury from frostbite D.To make them aware that ventilation will automatically stop
The lowest temperature at which a liquid gives off enou...
单项选择题The lowest temperature at which a liquid gives off enough vapor to ignite in the presence of an ignition source is called its （）.
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
