Science and Technology · Workshop Technology
Wire brushes used for cleaning rough work surfaces are made of wires that are ________.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Annealed
- 2Both Hardened and Tempered✓
- 3Tempered only
- 4Hardened only
Correct answer
Both Hardened and Tempered
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