凭证一旦保存,其( )不能修改。
A.制单日期
B.摘要
C.凭证编号
D.金额
参考答案:C
生产注射剂时常加入适量药用炭,其作用为 ()
A.吸附热原
B.能增加主药稳定性
C.脱色
D.除杂质
E.提高澄明度
A bond has a duration of 14.4 and a convexity measure of 85. If yield increases by 75 basis points, the percentage price change is closest to:()
A. -5.16%
B. -10.32%
C. -11.28%