焊条电弧焊在正常的焊接电流范围内，电弧电压主要与（）有关。
A.焊接电流
B.焊条直径
C.电弧长度
D.电极材料
参考答案：C
Our holiday is doomed to failure without you.
A．would doom
B．would have been doomed
C．had been doomed
D．has had to be doomed
真倾角
