The cutting speed for drilling __________ with high speed steel drills is 24 to 45 m/min. Options: A . &nbspmild steel B . &nbspcopper C . &nbspaluminium D . &nbspbrass

The

Question

The cutting speed for drilling __________ with high speed steel drills is 24 to 45 m/min.

Options:

A . mild steel

B . copper

C . aluminium

D . brass

Answer: Option A

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