对于任何一种焊接电源,负载持续率越高,则允许使用的()。A.电弧电压越低 B.电弧电 发布时间:2017-10-10 02:50 │ 来源:www.tikuol.com 题型:单项选择题 问题: 对于任何一种焊接电源,负载持续率越高,则允许使用的()。A.电弧电压越低B.电弧电压越高C.焊接电流越小D.焊接电流越大
题型:单项选择题 ---- What made her so upset ? ---- ________ . A.She lost her bikeB.That she losing her bikeC.Losing her bikeD.It was she lost her bike 查看答案