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Author: Zhihu UsersIn any case, female journalists now hold up half of the sky in the journalist industry. According to official statistics, the number of licensed journalists nationwide is 248,101, including 140,684 male journalists and 107,417 female journalists.(2) Electromagnetic time relay has short delay time (0.3 ~ 1.6 s), but its structure is relatively simple and is usually used in power failure delay occasions and DC circuits.-Ji Shisan (Answer-Good at It, Founder of Fruit Shell Net)1933年，国民党40万大军围剿中央苏区，苏区危在旦夕。红军第三军团独立团团长令长丰受命到兵工厂任党代表，率领手下加班加点生产出了为粉碎敌人“狼牙”计划所需的弹药。不料，弹药被埋伏在兵工厂内部的特务钟韶彩破坏，令长丰只好另辟蹊径，用“草船借箭”法从敌人手中重新搞到了弹药。特务头子周见白欲偷袭兵工厂，为了不让令猜到自己的真实意图，他明修栈道，暗渡陈仓，先在苏区大搞破坏行动。令长丰针锋相对，深入敌后，端掉了白军五个联络站。周见白后院起火，首尾难顾，只好回撤，偷袭兵工厂的计划流产了。为进一步粉碎敌人围剿苏区的阴谋，令长丰和兵工厂的技术人员一起开始研制烈性炸药。没想到中央特科从南昌策反的军工专家房圣凯也是敌人刻意安放在兵工厂的特务，研制过程中他处处挚肘，但最终房被令长丰的侠肝义胆，高风亮节打动，关键时刻倒戈，使烈性炸药研制成功，为我军突破敌军重围打下了坚实的基础。6. Os.mkdir ()--create directoryPS: Many forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated. Maybe Microsoft will launch a new SOA implementation scheme at that time. Wouldn't it be a waste of time to learn in depth, so they feel that there is no need to learn in depth and just know how to use them. I had the same feeling about this problem before, but now I think that although WCF technology may be replaced, the key to understanding a technology in depth is not to know some more advanced API calls, but to understand its implementation mechanism and way of thinking. Even if the latter technology is replaced, the mechanism behind it is definitely similar. Therefore, if you have a thorough understanding of a technology, you will feel familiar with the new technology and relaxed about it. In addition, after you have a thorough understanding of a technology, you dare to say that you have mastered the technology well during the interview, instead of saying that you use it a lot at ordinary times. Once you ask deeply, you do not know the implementation principle behind it. This is also why I want to write WCF series. I hope this opinion is helpful to some beginners.