katlego42 katlego42
  • 06-09-2021
  • Engineering
contestada

b) What materials will be used to make the mechanism of a headgear

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jekhia jekhia
  • 06-09-2021

Answer: : )

Explanation:

Modern head frames are built out of steel, concrete or a combination of both. Timber head frames are no longer used in industrialized countries, but are still used in developing nations.

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