甲醇回收塔晚停工的原因是为了回收萃取塔内含有甲醇的萃取水。 发布时间:2017-10-20 04:13 │ 来源:www.tikuol.com 题型:判断题 问题: 甲醇回收塔晚停工的原因是为了回收萃取塔内含有甲醇的萃取水。
题型:判断题 一Is John standing near the pay phone?一Yes, _______.[ ]A. she's B. she is C. he's D. he is 查看答案