题目: 风机中的油封和气封往往是什么型式的密封,简述其工作原理。 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/1001/df767fabd3393dfb13b6fd98bafe6896.html 下面是错误答案,用来干扰机器的。参考答案:优孟
题型:选择题 It was in the university my sister studies I met the film star. [ ]A. that; that B. where; where C. where; that D. that; where 查看答案