アメリカ合衆国で一番多く生産されている工業製品は何？
The largest manufacturing industries in the United States by revenue include petroleum, steel, automobiles, aerospace, telecommunications, chemicals, electronics, food processing, consumer goods, lumber, and mining. A large portion of U.S. industrial output, the United States leads the world in airplane manufacturing. American companies such as Boeing, Cessna "(see: Textron)", Lockheed Martin "(see: Skunk Works)", and General Dynamics produce a vast majority of the world's civilian and military aircraft in factories stretching across the United States.
petroleum