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TreeNode root = null;九十年代末期，处在改革攻坚阶段的中国煤炭业，在亚洲金融危机的冲击下、煤炭市场供大于求、整个煤炭业面临前所未有的困难和考验，有的煤矿经过改革已经扭亏脱困，有的煤矿则陷入更为艰难的困境之中。地处中国北方的晋阳矿务局三矿，原本是中国煤炭企业高效生产的一面旗帜，在此期间却因为多方原因陷入濒于颓败的绝境。晋煤集团高层领导毅然下决心撤换了没有功劳但有苦劳的原三矿矿长孙忠诚，将曾经在三矿做出成绩的副总赵志坚从党校抽调回来派往三矿，一手提拔赵志坚的集团董事长，党委书记毕世海在赵志坚临行前和赵志坚立下生死状，赵志坚如能在三年内带领三矿走出困境，实现安全生产、扭亏为赢，重整三矿昔日雄风，三年后，他保证拱手将晋煤集团最高领导权交给赵志坚，如果赵志坚在三年内，搞不好三矿，赵志坚便卷铺盖走人……原本是作为一个普通技术员从三矿走出去的赵志坚，今天却临危受命，做为一个大矿矿长身份重返了绝境中的三矿，为了完成领导的重托，为了让三矿近十万名职工家属不再对未来失望，赵志坚到任后、排除来自各方的干扰，摸清三矿陷入困境的诸多原2. As a Cheng Yuan who has been engaged in machine learning for more than two years, seeing the computer series you recommended also thinks it is very unreliable. I have read most of the books you recommended. In particular, novice readers are not recommended to read "Introduction to Algorithms" and "Data Mining: Concepts and Technologies". These two books are thick and heavy. Although the content is also good, you will not know the year of the monkey when you finish reading them. What does a novice need? It's getting started! Secondly, have you really finished reading Python Core Programming? This book is not for Python newcomers. It is very thick and difficult. It is very unfriendly to newcomers. And if you just want to be AI, then many parts of this book don't need to be used. Is web development and Django framework really necessary for our AI engineers? No. Xiao Bai has no distinction between key and non-key points in a book. He spent a lot of time learning unnecessary knowledge, which really does more harm than good. Giving guiding and targeted recommendations is responsible recommendation.The reason why it is difficult for shareholders to make money is that there are too many opportunities to make money, not the opposite. The more you pay attention to how much money others make, the harder it will be for you to make money. The more you feel that your stock is difficult to make money, the less money your operation will really make. Just like there is a kind of pet called "other people's pet", there is always a kind of stock called "other people's stock". When you see it in your eyes, you lose it in your heart.男孩们回来了…比以前更好吗?1月13日在Hulu上观看詹姆斯·拉弗蒂和斯蒂芬·科莱蒂主演的《人人都很棒》。8? Activity Monitor真乃天降神器。