移动后付费用户办理开通及取消国际业务时，只须提供有效身份证件，并确保当前无欠费。
参考答案：错
The estimated annual after-tax cash flows of a proposed investment are shown below: Year 1: $10000 Year 2: $15000 Year 3: $18000 After-tax cash flow from sale of investment at the end of year 3 is $120000 The initial cost of the investment is $100000, and the required rate of return is 12 percent. The net present value (NPV) of the project is closest to:（）
A. $63000.
B. $66301.
C. $19113.
一般而言，影响运输费用的因素有哪些？
