实行寿命管理的配件无制造单位、时间标记时，应按（）处理。
参考答案：报废
Due to the widespread ______ of this medical technology, more diseases can be discovered and treated at an early stage.
A．presentation
B．appreciation
C．qualification
D．application
三尖瓣下移畸形的临床表现有（）
A.活动时心悸、气短
B.易疲劳
C.发绀
D.肺动脉瓣第二心音亢进
E.肝大，下肢水肿
