强制性国家标准的代号是().A、GB/T B、GB C、GB/Q D、GB/Z 发布时间:2020-05-17 15:01 │ 来源:www.tikuol.com 题型:单项选择题 问题: 强制性国家标准的代号是().A、GB/TB、GBC、GB/QD、GB/Z
题型:单项选择题 If you have not been admitted to an overseas college, you shouldn't ____ but try another one. [ ]A. set down B. lose heart C. add up D. calm down 查看答案