To widen the opening of a hole, Countersink: to enlarge or dress out a hole with a reamer, to enlarge the bore of a gun.
A. Abrasive machining
B. Broaching
C. Reaming
D. Drilling
Answer:C
To widen the opening of a hole, Countersink: to enlarge or dress out a hole with a reamer, to enlarge the bore of a gun.
A. Abrasive machining B. Broaching C. Reaming D. Drilling