用碳弧气割加工焊缝坡口时,特别适用于开的坡口是( )形。A.VB.YC.JD.U 发布时间:2017-06-28 16:02 │ 来源:www.tikuol.com 题型:单项选择题 问题: 用碳弧气割加工焊缝坡口时,特别适用于开的坡口是( )形。A.VB.YC.JD.U
题型:单项选择题 Hanoi declared that it ______by fast-spreading H1V1, which ____other countries nearby.A.was being struck ,had hitB.has been struck,had hit C.has been struck ,has hitD.will be struck , has hit 查看答案