Inventions What Elisha Otis invented? The brake used in modern elevators Hydraulic Crane Turbine Jet Engine The brake used in modern elevators Hydraulic Crane Turbine Jet Engine ANSWER DOWNLOAD EXAMIANS APP
Inventions What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes? Charles Richter Joshua Rumble Giuseppe Mercalli Hiram Walker Charles Richter Joshua Rumble Giuseppe Mercalli Hiram Walker ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the toothbrush invented? 1742 1765 1790 1770 1742 1765 1790 1770 ANSWER DOWNLOAD EXAMIANS APP
Inventions The initials JCB on earth-moving equipment are those of the founder of the company that makes it. What is his name? Jack Croxford Baker John Christopher Baxter Joseph Cyril Bamford John Christopher Ballantyne Jack Croxford Baker John Christopher Baxter Joseph Cyril Bamford John Christopher Ballantyne ANSWER DOWNLOAD EXAMIANS APP
Inventions This part-time race car driver invented the bucket seat in 1969. Who was he?? Steve McQueen John Wayne Harrison Frazier Paul Newman Steve McQueen John Wayne Harrison Frazier Paul Newman ANSWER DOWNLOAD EXAMIANS APP
Inventions The Manhattan Project was started by President Roosevelt in 1942 to ensure that the U.S. beat the Germans in developing a nuclear bomb. Whom did Roosevelt appoint as scientific head the Manhattan Project? Robert Oppenheimer Vannevar Bush James B. Conant Leslie R. Groves Robert Oppenheimer Vannevar Bush James B. Conant Leslie R. Groves ANSWER DOWNLOAD EXAMIANS APP
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