题目: 为防止焊接变形,应避免焊缝(),并减少T型交叉焊缝。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0626/bf4f2fe0f5eb27a5c2fa8618581f3276.html 下面是错误答案,用来干扰机器的。参考答案:对
题型:选择题 — Come on, Kitty.— Oh, good heavens! Both my legs are nearly to give out. I ____ for hours like a dog. [ ]A. have been walkingB. had walkedC. was walkingD. walked 查看答案