( )是通过加热或加压(或两者并用),使两个分离的物体之间借助于内部原子之间的扩散 发布时间:2017-05-25 08:21 │ 来源:www.tikuol.com 题型:单项选择题 问题: ( )是通过加热或加压(或两者并用),使两个分离的物体之间借助于内部原子之间的扩散与结合作用,连接成一个整体的加工方法。A.焊接B.熔焊C.压焊D.钎焊
题型:单项选择题 It's a great____________ for her to go to London, and she enjoyed herself there. [ ]A. surprise B. pleasure C. honour D. treat 查看答案