Correct Answer: The brake used in modern elevators
Explanation:
In 1853, American inventor Elisha Otis demonstrated a freight elevator equipped with a safety device to prevent falling in case a supporting cable should break. This increased public confidence in such devices. Otis established a company for manufacturing elevators and patented (1861) a steam elevator.
Many people think that he invented the elevator, but the truth is, he invented the elevator brake. He also invented the railway safety brake.
Extension cords can be a tripping hazard, and can be easily damaged, causing an unsafe situation. There are many ways of safely getting power to each work place, where wiring is protected and concealed.
7. ESCAP stands for
Options
A. Economic and Social Commission for Asia and Pacific
B. European Society Council for Africa and Pacific
C. Economic and Social Commission for Africa and Pacific