根据国家的有关规定,医院通常按照药品的批发价格购买,以零售价格销售,其药品的加成率为()
A.10%
B.12%
C.15%
D.20%
E.22%
参考答案:C
Columbus had accomplished one of the most amazing and courageous________in history.
A.performance
B.feats
C.events
D.acts
饮水机是否需要定期清洗?