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1) Ýêñïëóàòàöèîííûé – ó÷èò.  êàêèõ óñë-ÿõ áóäåò ðàáîòàòü äàííàÿ ìàøèíà.

Îöåíèâàþò ôèç ñâ-âà, õèì ñâ-âà, ìåõ ñâ-âà.

2) Òåõíîëîãè÷åñêèé – òåõíîëîãè÷íîñòü, êàê îíè áóäóò îáðàáàòûâàòüñÿ;

3) Ýêîíîìè÷åñêèé – ìåäíûå ñïëàâû â 8 ðàç äîðîæå ñòàëè, Ni – 25 ðàç, òèòàí –

80 ðàç, ðîäèé – 45000 ðàç.