更多"Which extinguishing agent is the be"的相关试题:
[单项选择]Which extinguishing agent is best for use on a magnesium fire?()
A. Water
B. Sand
C. CO2
D. Dry chemical
[单项选择]An extinguishing agent which effectively cools,dilutes combustible vapors,removes oxygen,and provides a heat and smoke screen is().
A. carbon dioxide
B. Halon 1301
C. dry chemical
D. water fog
[单项选择]Which extinguishing agent is effective in combating an isoprene fire?()
A. Dry chemicals
B. CO2
C. Foam
D. All the above
[单项选择]Which extinguishing agent will cool down a heated bulkhead in the least amount of time?()
A. Water stream
B. Water fog or apray
C. Steam
D. Dry chemical
[单项选择]Which extinguishing agent is recommended in the Chemical Data Guide for use on a carbon disulfide fire?()
A. Alcohol foam
B. Dry chemical
C. Chemical foam
D. Water fog
[单项选择]Which extinguishing agent is NOT recommended in the Chemical Data Guide for use on a cyclohexane fire?()
A. Foam
B. Carbon dioxide
C. Dry chemical
D. Water fog
[单项选择]Which extinguishing agent is most effective on a mattress fire?()
A. CO2
B. Foam
C. Dry Chemical
D. Water
[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]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]Which of the listed extinguishing agents is NOT suitable for fighting a liquid paint fire?()
A. Dry chemical
B. Foam
C. Water
D. Carbon dioxide
[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]The best tool to use for removing the carbon ridge at the top of an enginecylinder, prior to removing the piston, is to use()
A. an electric grinder
B. a metal scraper
C. a reamer
D. a three-wing hone
[单项选择]The preferred agent used in fighting a helicopter crash fire is().
A. CO2
B. dry chemical
C. water
D. foam
[单项选择]Which fire fighting agent has the greatest capacity for absorbing heat?()
A. water
B. dry chemical
C. foam
D. CO2
[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]The agent has probably already handed over you the stowage plan,()?
A. isn't he
B. doesn't he
C. hasn't he
D. didn't he
[单项选择]As an extinguishing agent,foam().
A. conducts electricity
B. should be directed at the base of the fire
C. is most effective on burning gases which are flowing
D. extinguishes by cooling oil fires below ignition temperature
[单项选择]Carbon dioxide as a fire fighting agent has which advantage over other agents?()
A. It causes minimal damage
B. It is safer for personnel
C. It is cheaper
D. It is most effective on a per unit basis