【单选题】I am very tired today. I _____ go to bed early. [ ]
【单选题】听力原文:W: Go to bed early and get some rest, Jimmy. You have to get up early. M: But I can't. We're going to have an English test tomorrow morning. I must pass it this time. Q: What is the relationship ...
A.
Employer and employee.
【判断题】设随机变量X与Y相互独立, 且X服从正态分布N(1,2), Y服从Gamma分布Ga(1,2), 则随机变量X^2-2X+16Y+1服从Gamma分布Ga(3/2, 1/8).
【判断题】设随机变量X与Y相互独立, 且X服从正态分布N(1,2), Y服从Gamma分布Ga(1,2), 则随机变量X^2-2X+16Y服从Gamma分布Ga(3/2, 1/2).