為改善低合金鋼銲接，其預熱溫度應先以銲接位置的來選擇。(A)可(B)劣(C)良(D)優

問題詳情

80. 為改善低合金鋼銲接，其預熱溫度應先以銲接位置的來選擇。
(A)可
(B)劣
(C)良
(D)優

參考答案

無參考答案

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