更多"A squeeze-grip type carbon dioxide "的相关试题:
[单项选择]Portable carbon dioxide fire extinguishers should be sent ashore to be recharged ().
A. when the remaining charge volume is less than 90 percent of the required VOLUME
B. at each inspection for certification
C. at each annual inspection
D. when the weight loss exceeds 10% of weight of charge
[单项选择]A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be().
A. labeled empty and recharged as soon as possible
B. replaced in its proper location if weight loss is no more than 25%
C. replaced in its proper location regardless of weight
D. replaced in its proper location if weight loss is no more than 15%
[单项选择]The discharge from a carbon dioxide fire extinguisher should be directed().
A. at the base of the flames
B. at the center of the flames
C. to the lee side of the flames
D. over the tops of the flames
[单项选择]A carbon dioxide fire extinguisher should be recharged().
A. at least annually
B. whenever it is below its required weight
C. only if the extinguisher has been used
D. before every safety inspection
[单项选择]A carbon dioxide fire extinguisher has been partially discharged, and should be immediately ().
A. tagged and restowed properly in its rack
B. weighed and the charge loss recorded
C. given to the chief engineer for recharging
D. tagged "empty" and stowed separately from charged extinguishers
[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]Portable foam type fire extinguishers are most effective on().
A. mattress fires
B. oil fires
C. wood fires
D. All of the above
[单项选择]When using carbon dioxide to fight a fire on a bulkhead,the CO2 should be applied().
A. first to the bottom of the flaming area,sweeping from side to side,and following the flames upward
B. in a circular motion from the middle of the bulkhead outward
C. to the top of the flaming area,sweeping from side to side,and working toward the bottom
D. in an up-and-down motion from one side of the bulkhead to the other
[单项选择]When used to fight fire,carbon dioxide().
A. is effective if used promptly on an oil fire
B. has a greater cooling effect than water
C. is lighter than air
D. is harmless to cargo and crew
[单项选择]Foam-type portable fire extinguishers are more usefull in combating fires involving().
A. solid materials such as wood or bales of fiber
B. inflammable liquids
C. electrical equipment
D. metallic solids
[单项选择]Foam-type portable fire extinguishers are most useful in combating fires involving().
A. solid materials such as wood or bales of fiber
B. inflammable liquids
C. electrical equipment
D. metallic solids
[单项选择]A foam-type portable fire extinguisher is most useful in fighting a fire in().
A. generators
B. oil drums
C. the bridge controls
D. combustible metals
[单项选择]A foam-type portable fire extinguisher would be most useful in combating a fire in().
A. solid materials such as wood or bales of fiber
B. flammable liquids
C. a piece of electrical equipment
D. combustible metallic solids