设随机变量序列X1,X2,X3···,xn···,过立同服从参数为λ的指数分布,则-|||-lim _(narrow infty )P dfrac {1)(n)sum _(i=1)^n(x)_(i)-dfrac (1)(lambda )} e(e)^j= __-|||-A 1-|||-B 0-|||-C D (x )-|||-D dfrac (1)(2)