设f(x)在x=12的邻域内为可导函数,且
,求极限
参考答案:
Study the following information, calculate the expected rate of return. index is now selling at $490. market index multiplier is expected to be 5X. index earnings is expected to be $100. dividend payment is expected to be $40.()
A. 10%.
B. 20%.
C. 30%.
哪些是肝癌肝动脉造影时的表现()
A.肿瘤供血的肝动脉扩张
B.肿瘤湖征
C.肝血管受压拉直、移位或被肿瘤包绕
D.肿瘤内显示异常瘤血管
E.动静脉瘤