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1.Alege raspunsul correct: Este aliaj : bauxita Fonta ARAMA 2.Se utilizeaza la confectionarea conductorilor electrici: fierul plumbul CUPRUL 3.Culoarea metalelor este:

PROPRIETATE FIZICA proprietate mecanica proprietate tehnologica 4.Unealta folosita la gaurire se numeste: tarod filiera BURGHIUL pilirea 5.Operatia de prelucrare a materialelor metalice este: debitarea curatirea INDRPTAREA pilirea

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