13号、13A型钩尾框补充新品时须为()型;17型钩尾框补充新品时须为锻造钩尾框。 发布时间:2018-05-18 14:14 │ 来源:www.tikuol.com 题型:单项选择题 问题: 13号、13A型钩尾框补充新品时须为()型;17型钩尾框补充新品时须为锻造钩尾框。A.13AB.13BC.13号
题型:单项选择题 — Inventors have changed the way we live. — So they are famous for the great things they _____. [ ]A. do B. did C. are doing D. had done 查看答案