当锚筋直径≤20mm时,宜采用()。A.T形焊 B.压力埋弧焊 C.穿孔塞焊 D.手 发布时间:2017-12-16 08:09 │ 来源:www.tikuol.com 题型:单项选择题 问题: 当锚筋直径≤20mm时,宜采用()。A.T形焊B.压力埋弧焊C.穿孔塞焊D.手工焊
题型:单项选择题 — It's very important us to make a plan before a new term. — Yes. You must try to make it carefully. [ ]A. ofB. for C. to 查看答案