A.opening dead spaces to check for heat or fire
B.evacuation of the vessel
C.sounding the all clear signal
D.operation of the emergency generator
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A.release CO2 to the protected space
B.secure all mechanical ventilation in the protected space
C.sound the rig's general alarm signal for a fire
D.sound an alarm in the ballast control room
A.cannot be made with salt water
B.is heavier than oil and sinks below its surface
C.is corrosive and a hazard to fire fighters
D.conducts electricity
A.it can break down under high heat and emit noxious fumes
B.it will decompose under prolonged storage and lose its effectiveness
C.fire has been known to flash back over the surface of an oil fire
D.it is ineffective in fighting fires in high-voltage electrical equipment
A.can fit any size hose
B.converts a stream of water into a fog
C.increases the amount of water reaching the fire
D.can spray two streams of water at the same time
A.a vessel is equipped with an automatic smoke or fire detecting system
B.the cargo hatches are of steel construction
C.the cargo is of a nonflammable type
D.there is sufficient fire protection located on the main deck adjacent to the cargo hatch
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The brickwork surrounding the firebox of a boiler is known as（）.
The BEST method of applying foam to a fire is to（）.
One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that（）.
Portable foam type fire extinguishers are most effective on（）.
The all-purpose nozzle will produce a fog spray when you（）.
The best method of extinguishing a class A fire is to（）.
The carrier is liable for loss of or damage to the goods or delay in delivery caused by fire，（）the claimant proves that the fire arose from fault or neglect on the part of the carrier，his servants or agents.
The disadvantage of using CO2 is that the（）.
One advantage of the all-purpose nozzle is that it（）.
The canvas covering of fire hose is called the（）.