更多"Which extinguishing agent is most e"的相关试题:
[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]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 will most likely occur when entering shallow water? （）
A. Rudder action will become more effective
B. The vessel's list will change
C. The vessel's trim will change
D. An increase in speed will occur
[单项选择]The valve which is most suited for regulating the flow through a pipeline is a （）
A. gate valve
B. globe valve
C. swing-check valve
D. plug-cock valve
[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 the best for use on electrical fires?（）
A. Foam
B. CO2
C. Dry chemical
D. Water fog
[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]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 fighting agent has the greatest capacity for absorbing heat?（）
A. water
B. dry chemical
C. foam
D. CO2
[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 instrument is most useful in forecasting fog（）.
A. A barometer
B. An anemometer
C. A sling psychrometer
D. A pyrometer
[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]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
[单项选择]Which is the most serious type of fracture?（）
A. Compound
B. Greenstick
C. Closed
D. Crack
