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1. 關於真離心鑄造法的敘述,下列何者正確?(A) 須配合砂心才能製作中空鑄件 (B) 鑄件製品內部易產生收縮孔(C) 需要有豎澆道及冒口 (D) 適於長管的鑄造
問題詳情
1. 關於真離心鑄造法的敘述,下列何者正確?
(A) 須配合砂心才能製作中空鑄件
(B) 鑄件製品內部易產生收縮孔
(C) 需要有豎澆道及冒口
(D) 適於長管的鑄造
參考答案
答案:D
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】評論
A.真離心鑄造法是用離心力,不需砂心B.鑄件內部不易產生收縮孔
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37. 下列反應生成主要產物結構為何? (A) (B) (C) (D)
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1. 質量相同之甲、乙兩物體靜置於光滑水平面上,所施外力F如圖(一)所示,則下列敘述何者正確? (A) 此為同平面平行力系問題(B) 雖為光滑接觸平面,但平面仍會對物體產生反作用力(C) 藉由力的可傳
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