其中 Φ(x)是标准正态分布 CDF。
Explaining why customers further afield will be asked to recycle the bottles instead of returning them, Hartwig adds: "If the people purchasing them are from a different state, it's very unlikely they'll bring them back."。Line官方版本下载对此有专业解读
Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36。业内人士推荐搜狗输入法下载作为进阶阅读
Equal (2): Everything in this space must be equal to 2. The answer is 2-6, placed vertically; 2-1, placed horizontally.