Emission control systems are installed on engines to reduce what three specific exhaust products?   A. Oxides of sulfur, hydrocarbons, and nitrogen. B.Hydrocarbons, carbon dioxide, and nitrogen oxides. C.Hydrocarbons, carbon monoxide, and oxides of

Natural gas is mainly made of O a. Propane O b. Butane O c. Carbon O d. Methane

Which of the following statements about vehicles that are subject to Diesel Opacity Emissions (Smoke Meter) Inspection is NOT true? Only diesel powered vehicles with a Gross Vehicle Weight Rating (GVWR) over 8,500 pounds, per New York State Department of Environmental Conservation (DEC) regulations.   “DEMA” will appear on a vehicle's New York State registration to indicate that the vehicle is subject to an opacity smokemeter test (in addition to the safety inspection).   The “DEMA” (Diesel Emissions Metropolitan Area) Counties include Suffolk, Nassau, Queens, Kings, Richmond, New York, Bronx, Westchester & Albany.   Only diesel powere