黏膜免疫系统是发生局部特异性免疫应答的主要部位。()
参考答案:对
An analyst estimates that an initial investment of £ 500000 in a venture capital project will pay £ 6 million at the end of five years if the project succeeds and that the probability the project survives to the end of the fifth year is 25 percent. The required rate of return for the project is 19 percent. The expected net present value of the venture capital investment is closest to:
A.
B.
C.
闪蒸出料含水量高必然引起蒸馏进料含水量高。