A.Cleaner
B.Effective on metal fires
C.Greater range
D.More cooling effect
您可能感興趣的試卷
你可能感興趣的試題
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
A.meet
B.face
C.be in font of
D.follow
A.meet the applicable standards
B.be marked as additional equipment
C.be stowed in a separate area
D.All of the above
A.Cooling ability
B.Leaves no residue
C.Penetrating power
D.Nonconductivity
A.prevent the generation of flammable or combustible gas in tanks
B.blow out cargo lines to prevent gas concentrations
C.dilute tank atmospheres to keep gas concentrations below the lower explosive limit
D.prevent fires in the pumproom by continually displacing flammable vapors
最新試題
An advantage of a dry chemical over a carbon dioxide fire extinguisher is its（）.
At the required fire drill conducted aboard a ship，all persons must report to their stations and demonstrate their ability to perform the duties assigned to them（）.
A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.
A GROUP OF CREW MEMBERS TRAINED FOR FIGHTING FLOODING IN THE VESSEL are known as（）.
A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.
Any ship damaging a pipe could（）an immediate danger of fire.
A fuel line breaks，sprays fuel on the hot exhaust manifold，and catches fire. Your FIRST action should be to（）.
Any extinguishing agent used on a Class C fire must have which important property?（）
An extinguishing agent which effectively cools，dilutes combustible vapors，removes oxygen，and provides a heat and smoke screen is（）.
According to the regulations，what fire safety control feature is required in quick-closing shut off valves?（）