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