ER70S-3表示()。A、焊条钢 B、焊丝钢 C、高碳钢 D、拉丝钢 发布时间:2017-07-15 12:36 │ 来源:www.tikuol.com 题型:单项选择题 问题: ER70S-3表示()。A、焊条钢B、焊丝钢C、高碳钢D、拉丝钢
题型:单项选择题 As _____ matter of fact, the beauty of _____ nature there left an excellent impression on me.A. a; theB. ﹨; ﹨ C. a; ﹨ D. the; a 查看答案