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While taking copies in the duplicator_ must be kept in ON position.

ASilk carrier

Blever

CImpression roller

DReceiving plate

Answer:

B. lever

Read Explanation:

  • Duplicators are used for taking multiple copies of the stenciled matter
  • First duplication machine was invented by James Watt ( in 1780 )
  • Duplicator is otherwise known as Multicopier
  • While taking copies in the duplicator lever must be kept in ON position.

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