Trommels are revolving screens which normally operate in the range of

1.	Trommels are revolving screens which normally operate in the range of __________ rpm.
A.	43497
B.	15 - 20
C.	40 - 50
D.	60 - 75
Answer» C. 40 - 50

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Trommels are revolving screens which normally operate in the range of __________ rpm.

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