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Isingeniso: Ama-flanges amasha okuvikela asebenza njengezinto ezibalulekile embonini yamakhemikhali, ikakhulukazi ngaphakathi kwamapayipi namakhemikhali. Zidlala indima ebalulekile ekuqinisekiseni ukuphepha, ukuvimbela ukugqwala, nokwandisa ukusebenza okuphelele. Kulesi sihloko, sizohlola umqondo wama-flanges amasha okuvikela nokubaluleka kwawo embonini yamakhemikhali. 1. Yini emisha ku-