*$_The main purpose of a boring operation, as compared to drilling, is

1.	*$_The main purpose of a boring operation, as compared to drilling, is to?
A.	Drill a hole
B.	Finish the drilled hole
C.	Correct the hole
D.	Enlarge the existing hole
Answer» E.

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*$_The main purpose of a boring operation, as compared to drilling, is to?

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