“重点检重点修”的检查范围和质量标准规定:铁路货车上、下心盘()及螺栓无折断、螺母无 发布时间:2019-01-14 03:48 │ 来源:www.tikuol.com 题型:填空题 问题: “重点检重点修”的检查范围和质量标准规定:铁路货车上、下心盘()及螺栓无折断、螺母无丢失。
题型:填空题 We would like to take this ____ to introduce ourselves as one of the leading importers in our countryA. place B. time C. occasion D. opportunity 查看答案