Inventions What Frank Whittle invented? Jet propulsion Sonar Radar Ethyl gasoline Jet propulsion Sonar Radar Ethyl gasoline ANSWER DOWNLOAD EXAMIANS APP
Inventions What charge card, developed in 1950, was the first to be accepted nationally in the US? Visa Diner's Club Discover MasterCharge Visa Diner's Club Discover MasterCharge ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1880s 1900s 1800s 1890s 1880s 1900s 1800s 1890s ANSWER DOWNLOAD EXAMIANS APP
Inventions What Elisha Otis invented? Hydraulic Crane Jet Engine Turbine The brake used in modern elevators Hydraulic Crane Jet Engine Turbine The brake used in modern elevators ANSWER DOWNLOAD EXAMIANS APP
Inventions What Karl Benz invented? Gasoline powered automobile Glider Steam turbine Streetcar Gasoline powered automobile Glider Steam turbine Streetcar ANSWER DOWNLOAD EXAMIANS APP
Inventions What J. B. Dunlop invented? Model airplanes Automobile wheel rim Pneumatic rubber tire Rubber boot Model airplanes Automobile wheel rim Pneumatic rubber tire Rubber boot ANSWER DOWNLOAD EXAMIANS APP
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