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2019-12-21View Original

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49. () se refiere a la capacidad de deformación permanente del metal sin sufrir daños bajo la acción de una fuerza externa. ?A. Plasticidad B. Dureza C. Elasticidad Pregunta de ayer: C 48. Si no existen requisitos técnicos para el conjunto calefactor del acoplamiento, la temperatura máxima de calentamiento de la llama no deberá exceder (). ? A, 200℃B, 300℃, 400℃

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