A __________ is an early device used to treat pulp to improve the papermaking properties.

A __________ is an early device used to treat pulp to improve the pape

1.	A __________ is an early device used to treat pulp to improve the papermaking properties.
A.	Refiner
B.	Beater
C.	Hinge
D.	Spreader cone
Answer» C. Hinge