属氰苷类的化合物是()
A.红景天苷
B.天麻苷
C.苦杏仁苷
D.水杨苷
E.山慈菇苷
参考答案:C
如图是A、B两种物质的溶解度曲线,下列叙述中正确的是
A.T1℃时,100gA的饱和溶液中含有20gA
B.T2℃时,A和B的溶解度相等
C.A的溶解度大于B的溶解度
D.当A中含有少量的B时,可用蒸发结晶的方法提纯A
A bond portfolio manager owns $ 5 million par valfie of a noncallable bond issue. The duration of the bonds is 5.6 and the current market value of the bonds is $5125000. If yield decline by 25 basis points, the approximate new price of the bonds after the decline in yield will be closest to:()
A. $5053250.
B. $5070000.
C. $5196750.