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判斷題

鈦及鈦合金焊接目前應(yīng)用最廣泛的方法是焊條電弧焊。

答案：錯(cuò)誤

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判斷題

鋁鎂合金及鋁錳合金耐腐蝕性好，所以稱為防銹鋁。

答案：正確

判斷題

焊接16MnR低合金結(jié)構(gòu)鋼不用焊前預(yù)熱。

答案：錯(cuò)誤

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