为了防止反应油气管线结焦,应使油气管线弯头与分馏塔入口之间距离最短。 发布时间:2017-11-13 14:16 │ 来源:www.tikuol.com 题型:判断题 问题: 为了防止反应油气管线结焦,应使油气管线弯头与分馏塔入口之间距离最短。
题型:判断题 Many students are playing sports on the playground. are playing soccer; are running and jumping. [ ]A. Others; the others B. Some; other C. Some; others D. One; the other 查看答案