【单选题】I will wait here ____ the concert is over. [ ]
【单选题】听力原文:(Man) When will the concert start? (Woman) (A) The symphony is nearly an hour long. (B) As soon as everyone is seated. (C) It was first performed ten years ago. (24)
【单选题】When did you ______ the concert yesterday?
【单选题】I entered the hall at the ________moment when the concert began.
【简答题】什么是TFSI? 2、 油气分离器的作用是什么? 3、 自调节的双离心机油泵的工作过程是怎样的? 4、 奥迪 1.4L TFSI 发动机采用双循环冷却系统分别的作用是什么?