A.contaminating food with extinguishing agent B.spreading through the engineering space C.causing loss of stability D.a grease fire in the ventilation system
A.contain flammable fumes B.protect firefighters from flames C.prevent flames from entering tanks D.keep flames and sparks from getting out of an engine's exhaust system
A.should be worn while fighting a fire B.can be used in atmospheres deficient in oxygen C.filter contaminants from air that is to be breathed D.may be substituted for a self-contained breathing apparatus
A.8the heat of a fire melting the link B.a break-glass and pull-cable system C.electrical controls on the bridge D.a mechanical arm outside the vent duct
A.consealed B.detained C.contained D.kept
