Inventions When was the first elevator built? 1743 1785 1760 1739 1743 1785 1760 1739 ANSWER DOWNLOAD EXAMIANS APP
Inventions When was the toothbrush invented? 1790 1742 1770 1765 1790 1742 1770 1765 ANSWER DOWNLOAD EXAMIANS APP
Inventions In which decade were the first successful diode and triode vacuum tubes invented? 1890s 1880s 1800s 1900s 1890s 1880s 1800s 1900s 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. Beulah Henry Marjorie Joyner Mae Jamison Bessie Blount Beulah Henry Marjorie Joyner Mae Jamison Bessie Blount ANSWER DOWNLOAD EXAMIANS APP
Inventions Which scientist discovered the radioactive element radium? Marie Curie Isaac Newton Benjamin Franklin Albert Einstein Marie Curie Isaac Newton Benjamin Franklin Albert Einstein ANSWER DOWNLOAD EXAMIANS APP
Inventions In which year was MIDI introduced? 1973 1983 1977 1987 1973 1983 1977 1987 ANSWER DOWNLOAD EXAMIANS APP
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