Manufacturing and Production Technology

The cutting speed for drilling copper with high speed steel drills varies from_____.

  • A. 10 to 20 m/min
  • B. 18 to 30 m/min
  • C. 24 to 45 m/min
  • D. 60 to 90 m/min
Answer: Option B.
Explanation:

No answer description available for this question.

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