立焊时,中间焊道填充应适当做横向摆动,为使两侧坡口熔合良好,在坡口两侧应()。
A
暂无解析
Mrs.Londonhas____thatsheisunabletogetajob.
We thank you for your letter of May 27 and the _____ illustrated catalogue.
Marywasthegirl____(在初中我和她一起看电影的)。
WhichjobatHudsonswillPamapplyfor。
Theday____(在那天我第一次遇见他)wasthefirstofMayontheGreatWall.