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When was Abrasive water jet machining developed first?(a) 1942(b) 1958(c) 1974(d) 1980I have been asked this question by my school teacher while I was bunking the class.This intriguing question comes from Abrasive Water Jet Machining in chapter Mechanical Processes of Advanced Machining |
Answer» The CORRECT choice is (c) 1974 |
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