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( )78.軟焊與硬焊是以焊接金屬的熔點來區別,其界限溫度是 (A) 327℃ (B) 427℃ (C) 527℃ (D) 627℃。
問題詳情
( )78.軟焊與硬焊是以焊接金屬的熔點來區別,其界限溫度是
(A) 327℃
(B) 427℃
(C) 527℃
(D) 627℃。
參考答案
答案:B
難度:非常簡單0.923913
統計:A(5),B(85),C(1),D(1),E(0)
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