September 10th is ______ Day. [ ]
A. Teacher
B. Teachers'
C. Mothers
D. Mother
答案:B
审计依据和审计准则的关系?
强心苷使病人心电图发生的变化是
A.Q-T间期缩短
B.P-R间期延长
C.P-R间期缩短
D.P-P间期缩短
E.QRS波加宽