单项选择题 A、100GPa, 0.47 B、200GPa, 0.47 C、100GPa, 0.33 D、200GPa, 0.33
单项选择题 Keynes’s hypothesized that the speculative component of money demand was primarily determined by the level of A. interest rates. B. velocity C. income. D. stock market prices.
单项选择题 设随机变量X,Y独立同分布,且X的分布函数为F(x),则Z=min(X,Y)的分布函数为