IN_A_SHAPING_OPERATION,_THE_AVERAGE_CUTTING_SPEED_IS_(_STROKE_LENGTH_S – McqOptions

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1.	IN_A_SHAPING_OPERATION,_THE_AVERAGE_CUTTING_SPEED_IS_(_STROKE_LENGTH_S,_NUMBER_OF_STROKES_PER_MINUTE_N,_QUICK_RETURN_RATIO_R)?$
A.	NSR
B.	NSR/2
C.	NS(1 + R)
D.	NS(1 + R)/2
Answer» E.

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