债券当期收益率的计算公式是()。
A.A
B.B
C.C
D.D
参考答案:A
解析:
当期收益率,即信用工具的票面收益与其市场价格的比率。
Journalists aren’t supposed to think about whether they are doing the right thing.
A.Right
B.Wrong
C.Not mentioned
紫外线杀灭细菌芽孢时,照射剂量应达到多少()。
A.10000μW.s/cm2
B.10000μW.s/cm2
C.600000μW.s/cm2
D.100000μW.s/cm2