1.Ngokwezidingo zenqubo yokukhiqiza, khetha lezo ezinokuzivumelanisa nezimo eziqinile, ukusetshenziswa okulula nokusebenza, ukusebenza okuthuthukisiwe kwezobuchwepheshe, ukusebenza kahle kokukhiqiza okuphezulu, futhi kulula ukusekela ukukhiqiza ngemishini efanele.Phakathi kwabo, um...
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