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6. 配管符號 表示 (A)90 度彎管 (B)閘門閥 (C)單流閥 (D)聯合接頭 。
問題詳情
6. 配管符號
表示
(A)90 度彎管
(B)閘門閥
(C)單流閥
(D)聯合接頭 。
參考答案
答案:A
難度:
計算中
-1
書單:
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