A.class A
B.class B
C.class C
D.class D
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A.Carbon dioxide is corrosive when exposed to fire
B.Carbon dioxide should be applied slowly to a large engine room fire
C.Its total cooling effect is far greater than water
D.Its smothering effect is excellent for class B fires
A.go down by the head
B.list to starboard
C.trim by the stem
D.list to port
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
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
A.boiling point
B.flash point
C.viscosity point
D.toxic point
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