Performance appraisals sometimes called job performance evaluations or reviews are a powerful way to develop staffs potential. These skills are important not just for HR (Human Resources) professionals, but for any manager or supervisor who has respo

发表于:2018-12-05 / 阅读(104) / 评论(0) 分类 商务英语管理课程

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(72) / 评论(0) 分类 数学英语

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 Scientific American(十)月

66 神秘的彗星

发表于:2019-01-30 / 阅读(91) / 评论(0) 分类 科技之光

BEIJING, May 23 (Xinhua) -- China's top legislature has invited the public to give feedback on the enforcement of the Law on Protection of the Disabled, in a bid to check the law's implementation. Till June 30, the public can log on www.npc.gov.cn, t

发表于:2019-02-01 / 阅读(77) / 评论(0) 分类 英语新闻

大学英语College English 高等数学Advanced Mathematics 体育Physical Education 军事理论Military Theory 机械制图Mechanical Graphing 算法语言Algorithmic Language 大学物理College Ph

发表于:2019-02-08 / 阅读(87) / 评论(0) 分类 英文语法词汇