List two products of complete combustion of propane. {Ans: A. Water Vapor B. Carbon Dioxide}The 2nd stage regulator is located at either the tank or the structure being served and is set to control about ( 10 PSI ) ( 11" WC ) {Ans: 11" WC}Which NFPA code applies to propane storage and piping outside the building, upstream of the final service pressure regulator? ________________ {Ans: 58}Propane containers are _______________ times more puncture resistant than gasoline containers. {Ans: 20}HD-5 propane is often used as a motor fuel because because the maximum level of propylene is limited to _______________% {Ans: 5}Prior to 1967, the DOT was known as the ________________ {Ans: ICC}