A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged.It should be ______.
A.replaced in its proper location if weight loss is no more than 15%
B.replaced in its proper location if weight loss is no more than 25%
C.labeled empty and recharged as soon as possible
D.labeled empty and replaced in its proper location regardless of weight
第1题:
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
第2题:
A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in ______.
A.generators
B.oil drums
C.the bridge controls
D.combustible metals
第3题:
An advantage of an ABC dry chemical over a carbon dioxide fire extinguisher is ______.
A.lack of toxicity
B.the multipurpose extinguishing ability
C.burn-back protection
D.cooling ability
第4题:
In order to discharge a CO2 portable fire extinguisher, the operator must FIRST ______.
A.invert the CO2 extinguisher
B.squeeze the two trigger handles together
C.remove the locking pin
D.open the discharge valve
第5题:
at the base of the flames
at the center of the flames
to the lee side of the flames
over the tops of the flames
第6题:
generators
oil drums
the bridge controls
combustible metals
第7题:
foam or soda acid
dry chemical or foam
carbon dioxide or dry chemical
carbon dioxide or foam
第8题:
base of the flames,moving the horn from side to side,following the flames upward as they diminish
top of the flaming area,moving the horn from side to side,following the flames downward as they diminish
center of the flaming area,moving the horn vertically from top to bottom
bottom of the flaming area,moving the horn vertically to the top following the flames upward as they diminish
第9题:
Insure the chemical is powdery
Replace the cartridge
Pressure test the discharge hose
Test the pressure gauge for proper operation
第10题:
tagged and restowed properly in its rack
weighed and the charge loss recorded
given to the chief engineer for recharging
tagged empty and stowed separately from charged extinguishers
第11题:
greater range
effectiveness on all types of fires
cleanliness
All of the above
第12题:
invert the CO extinguisher
squeeze the two trigger handles together
remove the locking pin
open the discharge valve
第13题:
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 solid
第14题:
An advantage of a dry chemical over a carbon dioxide fire extinguisher is its ______.
A.greater range
B.effectiveness on all types of fires
C.cleanliness
D.All of the above
第15题:
An engine compartment gasoline fire requires which type of extinguisher?______.
A.Carbon dioxide
B.Dry chemical
C.Foam
D.All of the above
第16题:
replaced in its proper location if weight loss is no more than 15%
replaced in its proper location if weight loss is no more than 25%
labeled empty and recharged as soon as possible
labeled empty and replaced in its proper location regardless of weight
第17题:
generators
oil drums
the bridge controls
combustible metals
第18题:
soild materials such as wood or bales of fiber
flammable liquids
a piece of electrical equipment
combustible metallic solids
第19题:
labeled empty and recharged as soon as possible
replaced in its proper location if weight loss is no more than 25%
replaced in its proper location regardless of weight
replaced in its proper location if weight loss is no more than 15%
第20题:
Dry chemical and carbon dioxide
Foam (stored pressure) and soda-acid
Carbon dioxide and foam (stored pressure)
Dry chemical and soda-acid
第21题:
at least annually
whenever it is below its required weight
only if the extinguisher has been used
before every safety inspection
第22题:
Dry chemical (cartridge-operated)
Water (cartridge-operated)
Water (pump tank)
Carbon dioxide
第23题:
Because carbon dioxide dilutes the oxygen concentration in the atmosphere and may cause asphyxiation
Because carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gas
Because carbon dioxide is a colorless and odorless gas that becomes highly toxic in the presence of high temperatures and will quickly incapacitate a person exposed to this gas
This action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless gas