【简答题】活塞销与活塞销座孔和连杆小头连接方式为半浮式时,活塞销在连杆小头孔内为固定不动的()配合,活塞销在销座孔内为可以活动的()配合。
【单选题】How did the woman obtain the information about arm exercises?
A.
By talking to an expert.
B.
By reading an article.
C.
By attending an exercise class.
D.
By listening to the radio.
【单选题】I look forward to hearing from you soon.
【简答题】Although he's rich, he isn't very happy.