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25. 有關鑄砂特性之敘述,下列何者正確?(A) 鑄砂顆粒愈粗,耐火性愈差 (B) 鑄砂顆粒愈粗,透氣性愈好(C) 鑄砂顆粒愈粗,砂模強度愈佳 (D) 鑄砂顆粒愈粗,鑄件表面愈細緻
問題詳情
25. 有關鑄砂特性之敘述,下列何者正確?
(A) 鑄砂顆粒愈粗,耐火性愈差
(B) 鑄砂顆粒愈粗,透氣性愈好
(C) 鑄砂顆粒愈粗,砂模強度愈佳
(D) 鑄砂顆粒愈粗,鑄件表面愈細緻
參考答案
答案:B
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上一篇 :
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