下列各穴定位，不在同一水平线的是：（）。
A.腹哀
B.承满
C.石关
D.建里
E.关门
参考答案：B
函数f（x）=x3+ax-2在区间（1，+∞）内是增函数，则实数a的取值范围是 ______．
Which of the following statements about NPV and IRR is FALSE（）
A. The NPV will be positive if the IRR is less than the cost of capital.
B. The IRR can be positive even if the NPV is negative.
C. The NPV method is not affected by the multiple IRR problem.
