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How is the cut surface distinguished in a sectional view?

  • A.by hatching at forty-five degrees
  • B.by leaving it entirely blank
  • C.by filling it solid black
  • D.by outlining it with a chain line

Answer: A

Evenly spaced thin lines at forty-five degrees mark the material actually cut through, so the cut face reads unmistakably against the surfaces merely seen beyond it. Very thin sections are the recognised exception and may be filled solid.

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