The foam extinguisher should be used （）.A、in the endB、upside downC、down sideD、on top

______, as the chemical extinguisher agent, should be used for an electric fire.

A.dry chemical or foam

B.foam or soda acid

C.carbon dioxide or foam

D.carbon dioxide or dry chemical

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

What type of extinguisher should be used for an electric fire? ________

A.CO2

B.Form

C.Water

D.Water and Form

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

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

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

Upon the completion of required tests, a ____ should be placed on each extinguisher, showing the date and the person who completed the tests.

A.cap

B.disc

C.tag

D.cover

As an extinguishing agent, foam ______.

A.conducts electricity

B.should be directed at the base of the fire

C.is most efffective on buring gases which are flowing

D.extinguishes by cooling oil fires below ignition temperature