【单选题】柴油机调速器调速弹簧变软会导致柴油发动机()。
【单选题】Qingdao is a good place to visit. You can enjoy yourself there if you have a 。
【单选题】USB2.0两个外设之间距离(线缆长度)可达( )
【单选题】Qingdao is _______ beautiful city in summer.
【单选题】Qingdao is _____ the east of China. [ ]
【单选题】— Do you think Qingdao is a fantastic place for tourist? — Yes, I have ___ there many times. It is quite beautiful.
【简答题】Qingdao is_________ most beautiful coastal city and I think I'll go there for_________ second time.