The answer to this is Bulls icon
The sheave wheel is a pulley wheel that sits above the mine shaft. The hoist cable passes over the sheave wheel and then down the shaft of the mine.
(copied from google)
Answer:
education purposes
Explanation:
Education institutes make some programs like School of the Air and College of the Air, forums, and discussion tables, in 1940 the FCC reserved a range of the FM radio spectrum for education purposes.
Although FM was unpopular when the FCC moved the FM bandwidth to a higher set of frequencies, and people and consumer stations had to buy new equipment.
a hard copy stores data and information in the form of physical files it may be images text photographs and more a soft copy data and information in the form of virtual file saved on a computer or a drive you can preserve a hard copy for two long because its day subjected to wear and tear