50 下列何種金屬熔解法最適合使用於前銲法(soldering before baking porcelain)?
(A)電阻爐(electric resistance furnace)
(B)氧及瓦斯的混合焰(oxygen and gas)
(C)高頻感應熔解(high frequency induction melting)
(D)弧熔(arc melting)
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統計: A(69), B(322), C(34), D(45), E(0) #888580
統計: A(69), B(322), C(34), D(45), E(0) #888580