John ________the man _______ be set free

Which of the following statements about the internal rate of return (IRR) and net present value (NPV) is least accurate（）

A. The NPV method assumes that cash flows will be reinvested at the cost of capital, while the IRR method assumes that they are reinvested at the IRR.

B. The IRR is the discount rate that equates the present value of the cash inflows with the present value of the outflows.

C. For mutually exclusive projects, if the NPV rankings and the IRR rankings give conflicting signals, you should select the project with the higher IRR.

下列杠杆中，______属于省力杠杆，______属于费力杠杆，______属于等臂杠杆．（只需将各杠杆编号填入上述横线）．

A、撬石头的锄头；B、理发剪刀；C、牙钳（俗称“胶钳”）；D、铁铲；E、挑水扁担（两桶水等重）；F天平．

诊断原发性肝癌常用肿瘤标志物的最佳组合是（）.

A.AFP、γ-GTⅡ、ALP

B.AFP、-γ-GT、GST

C.AFP、-γ-GT、TPS

D.γ-GTⅡ、ALP1、GST

E.AFP、CA199、NSE

在轻绳的两端各拴一个小球，一人用手拿着上端的小球站在3楼的阳台上，放手后让小球自由下落，两小球相继落地的时间差为T．如果站在4楼的阳台上，同样放手让小球自由下落，不考虑阻力，则两小球相继落地的时间差将 [ ]

A．不变          

B．增大        

C．减小          

D．无法判断

用尼龙线制成的发网