更多"After extinguishing a fire with CO2"的相关试题:
[单项选择]The fire extinguishing action of CO2 comes mostly from （）.
A. breaking the fire chemical chain reaction
B. smothering
C. cooling
D. isolating the heat from the fuel
[单项选择]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
[单项选择]After extinguishing a fire with C02,it is availabe to（）.
A. use all CO2 available to cool the surronding area
B. stand by with water or other agents
C. thoroughly ventilate the space of CO2
D. jettison all buring materials
[单项选择]The best method of extinguishing a class A fire is to （）.
A. remove oxygen from the area
B. smother fire with foam
C. smother fire with CO2
D. cool fuel below ignition temperature
[单项选择]What method of extinguishing fire in a hatch is the best to minimize damages to the cargoes?（）.
A. Foam
B. CO2
C. Water
D. All of the above
[单项选择]The remote control for a fixed fire extinguishing system should be（）.
A. painted red and labeled
B. concealed from the crew
C. protected by plexiglass
D. padlocked
[单项选择]Which fire extinguishing agent has the greatest capacity for absorbing heat?（）
A. Water
B. Foam
C. Dry chemical
D. Carbon Dioxide
[单项选择]Water is a very effective fire extinguishing agent because it（）
A. will remove all the toxic fumes from the air
B. has the greatest cooling ability
C. will leave no harmful residue
D. completely removes combustible vapors from the air
[单项选择]Which of the fire extinguishing agents listed is the safest to use when combating a class C fire?（）
A. CO2
B. Foam
C. Water fog
D. Soda acid
[单项选择]A branch line valve of a fire extinguishing system on a ship must be marked with the（）.
A. maximum pressure allowed at that branch
B. name of the space or spaces which it serves
C. date of the last maintenance inspection
D. pressure needed to maintain an effective stream at that point
[单项选择]Which fire extinguishing agent can NOT be used on an ethylenediamine?（）
A. Water foam
B. Dry chemical powder
C. Water fog
D. Alcohol foam
[单项选择]Fire extinguishing agents used on Class C fires must be（）.
A. able to absorb heat
B. water based
C. nonconducting
D. nontoxic
[单项选择]Any extinguishing agent used on a Class C fire must have which important property?（）
A. Cooling ability
B. Leaves no residue
C. Penetrating power
D. Nonconductivity
[单项选择]Any extinguishing agent used on a Class “C” fire must have which important property? （）
A. Cooling ability
B. Leaves no residue
C. Penetrating power
D. Nonconductivity
[单项选择]Portable CO2 fire extinguishers should NOT be used to inert a space containing flammable liquids due to the danger of（）.
A. the CO2 being inhaled by personnel
B. reflash of burning liquids
C. vapor condensation on the extinguisher
D. the discharge causing a static spark
[单项选择]After using a CO2 extinguisher on a ship，it should be（）.
A. put back in service if some CO2 remains
B. hydrostatically tested
C. retagged
D. recharged
[单项选择]CO2 extinguishes a fire by（）.
A. cooling
B. smothering
C. chemical action
D. All of the above
