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5. 金屬之塑性加工可分為熱加工與冷加工,是以下列何者為界線?(A)結晶溫度 (B)熔點 (C)變態點 (D)再結晶溫度
問題詳情
5. 金屬之塑性加工可分為熱加工與冷加工,是以下列何者為界線?
(A)結晶溫度
(B)熔點
(C)變態點
(D)再結晶溫度
參考答案
答案:D
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用户評論
【用戶】
ggdet
【年級】國一下
【評論內容】熱加工與冷加工是以該.....看完整詳...
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4. 一壓縮彈簧,受壓縮力由20 N增加至32 N時,彈簧長度由18 cm被壓縮至12 cm,試問彈簧之自由長度為?(A)48 (B)28 (C)24 (D)22
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