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
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相关考题
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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 -
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 -
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
