连接体
A.是同定桥粘固于基牙上并与桥体相连的部分B.是同定桥恢复缺失牙的形态和功能部分C.是基牙D.是固定桥的应力集中部分E.具有一定应力缓冲作用
参考答案:D
_____,memories of staying abroad as an exchange student flooded into his mind.
A.Listening to these songs
B.Having listened to these songs
C.He was listening to these songs
D.When he listened to these songs
将(a)改为(b)是为了防止螺栓连接的()
A.栓杆被剪坏
B.杆与孔的挤压破坏
C.被连构件端部被剪坏
D.杆受弯破坏