Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1900s 1800s 1880s 1890s 1900s 1800s 1880s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions What charge card, developed in 1950, was the first to be accepted nationally in the US? Discover MasterCharge Diner's Club Visa Discover MasterCharge Diner's Club Visa ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented the phonograph? Jules Levy John Kruesi Alexander Graham Bell Thomas Edison Jules Levy John Kruesi Alexander Graham Bell Thomas Edison ANSWER DOWNLOAD EXAMIANS APP
Inventions Who invented Jet Engine? Lewis E. Waterman Sir Frank Whittle Gottlieb Daimler Roger Bacon Lewis E. Waterman Sir Frank Whittle Gottlieb Daimler Roger Bacon ANSWER DOWNLOAD EXAMIANS APP
Inventions What Karl Benz invented? Steam turbine Glider Gasoline powered automobile Streetcar Steam turbine Glider Gasoline powered automobile Streetcar ANSWER DOWNLOAD EXAMIANS APP
Inventions This African-American woman physical therapist worked with soldiers disabled in World War II. She invented a device that helped the disabled to eat by delivering food through a tube to a mouthpiece. Mae Jamison Marjorie Joyner Beulah Henry Bessie Blount Mae Jamison Marjorie Joyner Beulah Henry Bessie Blount ANSWER DOWNLOAD EXAMIANS APP
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