A.gravity when the extinguisher is turned upside down B.pressure from a small CO2 cartridge on the extinguisher C.air pressure from the hand pump attached to the extinguisher D.pressure from the reaction when water is mixed with the chemical
A.reading the gage pressure B.weighing the extinguisher C.discharging a small amount of CO2 D.seeing if the seal has been broken
A.avoid kinking the hose B.avoid personal injury during connection C.make connecting easier D.prevent spray on electrical equipment
A.generators B.oil drums C.the bridge controls D.combustible metals
A.posted with instructions on the operation of the system B.ventilated and equipped with explosion-proof switches C.painted with red and black diagonal stripes D.equipped with a battery powered source of emergency lighting
