Why should air be vented prior to hydrostatic testing? {Ans: to prevent violent and dangerous failure of the cylinder}Class A fires involve {Ans: Common Combustibles such as paper, wood, cloth, rubber, plastics}What is hydrostatic testing {Ans: Pressure testing of the extinguisher to verify its strength against unwanted rupture.}Any fire extinguisher that can no longer be serviced in accordance with the manufacturers maintenance manual is considered to be _______ and shall be ________ from service {Ans: obsolete, removed}When does NFPA permit cabinets to be locked? {Ans: Subject to malicious use and include means of emergency access}Class K fires involve {Ans: cooking appliances that involve combustible cooking media (vegetable or animal oils and fats).}What is the minimum travel distance to a 20-B rated extinguisher in an ordinary area? {Ans: 50ft}An organization office or individual responsible for enforcing the requirements of a code or standard or for approving equipment, materials, an installation or a procedure {Ans: AHJ}Placement of portable fire extinguishers containing halogenated agents should conform to ________ _______ _______ warnings contained on the extinguisher nameplate. {Ans: Minimum confined space volume}fire extinguishers in which both the extinguishing material and expelling gas are kept in