(A) both forward and return strokes (X)
(B) forward stroke ()
(C) return stroke (X)
(D) none of these (X)
Answers: A file removes the metal during forward stroke.
(A) both forward and return strokes (X)
(B) forward stroke ()
(C) return stroke (X)
(D) none of these (X)
Answers: A file removes the metal during forward stroke.
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