A.It is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)
B.Most foams can be used with dry chemicals to attack a fire by two methods
C.Foam is effective on combustible metal fires
D.Foam can be made with seawater or fresh water
您可能感興趣的試卷
你可能感興趣的試題
A.Length of the discharge pipe
B.Height of the discharge pipe
C.Difference between the discharge and suction pressures
D.Sum of discharge and suction pressures
A.Eliminates unburned fuel oil residues from the firebox
B.Increases boiler efficiency
C.Flushes away mineral deposits inside the water tubes
D.Cleans soot deposits from the inside of the stack
A.Smothers burning surfaces，organically destroys fuel
B.Cools fire and adjacent surfaces，provides protective barrier
C.Reaches areas not protected by steam or CO2 smothering systems
D.Allows fire to be attacked from leeward，saturates liquid surfaces
A.CO2 (carbon dioxide) fire extinguishers
B.foam fire extinguishers
C.water (stored pressure) fire extinguishers
D.All of the above
A.fight an electrical fire
B.fight a magnesium fire
C.eliminate smoke from a compartment
D.All of the above
最新試題
There is a fire aft aboard your vessel. To help fight the fire，you should（）.
The type of extinguisher which should be used for an electricity fire is（）.
To remedy a leaking fire hose connection at the hydrant，secure the valve and（）.
What is meant by the term overhaul in firefighting?（）
Traditionally，the signal for fire aboard ship is（）.
The spread of fire is prevented by（）.
To prevent the spread of fire by conduction you should（）.
What is the most vulnerable part of the fire main system on board an offshore rig?（）
What is an advantage of using foam in fire fighting?（）
The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.