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26. 有關整體模型砂模製作過程之敘述,下列何者不正確?(A) 模型表面先覆蓋面砂,再填加背砂 (B) 搗砂過程一般順序由外緣向內搗實(C) 完成合模記號後,再進行插置通氣孔 (D) 水刷濕潤砂模後,
問題詳情
26. 有關整體模型砂模製作過程之敘述,下列何者不正確?
(A) 模型表面先覆蓋面砂,再填加背砂
(B) 搗砂過程一般順序由外緣向內搗實
(C) 完成合模記號後,再進行插置通氣孔
(D) 水刷濕潤砂模後,再使用起模針起模
參考答案
答案:C
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24. 有關鑄造安全之敘述,下列何者不正確?(A) 澆斗使用前應確實烘乾 (B) 熔解爐地面四周應保持乾燥(C) 操作轉動機具應配載防滑手套 (D) 存放易燃氣體應安置於通風場所
下一篇 :
27. 有關鑄造用砂心特性之敘述,下列何者正確?(A) 乾砂心精度通常比濕砂心高 (B) 乾砂心強度通常比濕砂心低(C) 乾砂心製作常與模型一起完成 (D) 乾砂心常使用相同的模砂完成
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