更多"To prevent the spread of fire by co"的相关试题:
[单项选择]To prevent the spread of fire by conduction, you should （）.
A. cool the bulkheads around the fire
B. remove combustibles from direct exposure
C. close all openings to the area
D. shut off all electric power
[单项选择]To prevent the spread of fire by convection you should （）.
A. remove combustibiles from direct exposure
B. cool the bulkhead around the fire
C. close all openings to the area
D. shut off electrical power
[单项选择]Fire dampers prevent the spread of fire by（）.
A. convection
B. conduction
C. radiation
D. direct contact
[单项选择]Halon from extinguishers used on a class B fire，should be directed（）.
A. at the top of the flames
B. at the base of the fire near the edge
C. in short quick bursts
D. toward the upwind side of the fire
[单项选择]Radiation can spread a fire by （）.
A. transmitting the heat of a fire through the ship s metal
B. burning liquids flowing into another space
C. heated gases flowing through ventilation systems
D. the transfer of heat across an unobstructed space
[单项选择]The spread of fire is prevented by（）.
A. cooling surfaces adjacent to the fire
B. leaving combustibles in the endangered area
C. increasing the oxygen supply
D. All of the above
[单项选择]The spread of fire is NOT prevented by（）.
A. shutting off the oxygen supply
B. cooling surfaces adjacent to the fire
C. removing combustibles from the endangered area
D. removing smoke and toxic gases by ensuring adequate ventilation
[单项选择]You will extinguish a fire when you remove（）.
A. nitrogen
B. oxygen
C. sodium
D. carbon dioxide
[单项选择]Fire may ba spread by which means?（）.
A. Conduction of heat to adjacent surfaces
B. Direct radiation
C. Convection
D. All of the above
[单项选择]Fire may be spread by which means?（）.
A. Conduction of heat to adjacent surfaces
B. Direct radiation
C. Convection
D. All of the above
[单项选择]A fire may be spread by which of the following means?（）
A. Conduction of heat to adjacent surfaces
B. Direct radiation
C. Convection
D. All of the above
[单项选择]Prior to entering a davit-launched liferaft，you should make sure that（）.
A. the liferaft is well ventilated of excess carbon dioxide
B. all personnel have removed their life preservers to facilitate boarding
C. the door flap has been cut away and stowed inside the raft
D. All of the above
[单项选择]A fire starts on you vessel while refueling. You should first（）.
A. stop the ventilation
B. sound the general alarm
C. determine the source of the fire
D. attempt to extinguish the fire
[单项选择]When fighting an electrical fire, you should first （）.
A. stop ventilation to the area
B. stop the vessel
C. secure electricity to the circuit
D. apply CO2 to the fire
[单项选择]（）is main emergency fire system in all merchant ships.
A. CO2 system
B. Foam system
C. Dry power system
D. Water supply system
[单项选择]To extinguish an electrical fire, you should use （）.
A. mechanical foam
B. chemical foam
C. carbon dioxide
D. soda acid
[单项选择]When approaching a fire from win ward, you should shield firefighters from the fire by using（）
A. low-velocity fog
B. high-velocity fog
C. a straight stream of water
D. foam spray
