二尖瓣狭窄患者的临床并发症表现有()
A.心律失常
B.肺部感染
C.肺水肿
D.栓塞
E.亚急性感染性心内膜炎
参考答案:A, B, C, D, E
I asked the teacher if there an English test the next day.
A.would be
B.will be
C.will have
D.would have
质量管理体系基本原理是八项质量管理原则在质量体系中的应用原理。()