己内酰胺装置苯罐碱洗的原因是苯中含己太高。
参考答案:错
6.I have to go to work by taxi because my car ____at the garage.
A.will be repaired
B.is repaired
C.is being repaired
D.has been repaired
柏林大学最重要的特征和原则就是()