航海英语探火与消防设备章节练习(2017.12.25)

单项选择题
All of the following are part of the fire triangle EXCEPT（）.
A.electricity
B.fuel
C.oxygen
D.heat
单项选择题
An inert gas system on a tanker should be used to（）.
A.prevent the generation of flammable or combustible gas in tanks
B.blow out cargo lines to prevent gas concentrations
C.dilute tank atmospheres to keep gas concentrations below the lower explosive limit
D.prevent fires in the pumproom by continually displacing flammable vapors
单项选择题
A fuel line breaks，sprays fuel on the hot exhaust manifold，and catches fire. Your FIRST action should be to（）.
A.batten down the engine room
B.start the fire pump
C.apply carbon dioxide to the fire
D.shut off the fuel supply
单项选择题
A large oil fire on the deck of a ship can be fought most effectively with（）.
A.dry chemical
B.foam
C.high-velocity fog
D.Water (cartridge-operated)
单项选择题
At night while the ship is tied up to the dock，a fire breaks out in a cargo hatch. After sounding the alarm，what should the person on watch do?（）
A.Begin fighting the fire immediately
B.Await further orders from the Master
C.Let go the lines to let the vessel drift to an anchorage
D.Send a person to summon the shore authorities
单项选择题
A combination or all-purpose nozzle produces（）.
A.low-velocity fog only
B.a solid stream only
C.a solid stream and foam
D.a solid stream and fog
单项选择题
A ship must have a self-contained breathing apparatus to be used as protection from gas leaking from a refrigeration unit. To meet this requirement，you may use（）.
A.a gas mask certified by the Mine Safety and Health Administration
B.the same self-contained breathing apparatus required with the fireman's outfit
C.an oxygen breathing apparatus，provided that the device has been inspected within three years
D.a portable ventilation system that will provide a complete change of air every three minutes
单项选择题
An inert gas system is designed to reduce the possibility of tank explosions by（）.
A.eliminating sparks and fire in the vicinity of cargo tanks
B.removing all hydrocarbon gases from the cargo tanks
C.blanketing cargo tanks with inert foam
D.reducing the oxygen concentration below levels necessary for combustion
单项选择题
As compared to carbon dioxide，dry chemical has which advantage?（）.
A.Cleaner
B.Effective on metal fires
C.Greater range
D.More cooling effect
单项选择题
After extinguishing a paint locker fire using the fixed CO2 system，the next action is to have the space（）.
A.opened and burned material removed
B.left closed with vents off until all boundaries are cool
C.checked for oxygen content
D.doused with water to prevent reflash