动手操作.画一个底为3厘米,高为2厘米的钝角三角形,并标出它的底和高.
根据题意画图如下:
胡先生还需作哪种辅助检查才能进一步确诊()。
A.便潜血
B.钡灌肠
C.B超
D.CT
E.内镜检查
A non-callable bond with 18 years remaining maturity has an annual coupon of 7 percent and a $1000 par value. The current yield to maturity on the bond is 8 percent. Which of the following is closest to the effective duration of the bond()
A. 9.63.
B. 11.89.
C. 8.24.