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At that time, The helmets worn by our army are GK80 bulletproof helmets. After understanding, I am sure that Zhang Xiaobo is wearing this model. The material used to make it is 232 bulletproof steel, which has excellent performance and has good protective effect on various high-speed flying hard objects such as fragments and rubble lifted by explosion. However, because it is a pure metal helmet, it does have the disadvantage of being sultry when fighting in hot conditions.TelecommunicationsFor more information on differential privacy, please read Matt's introduction article (https://blog.cryptographyengineering.com/2016/06/15/what-is-differential-privacy/). To learn more about PATE and model theft attacks, please read Ian's article on this topic (http://www.cleverhans.io/privacy/2018/04/29/privacyand-machine-learning.html).3) If Ping does not work, it may be a network protocol configuration problem. Check the computer's IP address, gateway, DNS and other configurations.首播: 2019-04-19(日本)