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Well, this article has already summarized how to add, delete and modify iptables rules. Combined with the previous article, we have mastered the "add, delete, change and check" of iptables rules. At the same time, this article has also summarized how to set the default strategy of the chain and how to save iptables rules.In addition, As Zhang Xiaobo said, On the front line at that time, Wearing or not wearing a helmet is a "choice", Because Vietnam is located in Southeast Asia, The climate is hot and humid, Helmets are heavy and airtight, Wearing it is very easy to cause heatstroke, Particularly in fast maneuvers, This is the easiest way to do strenuous activities such as running. Therefore, in order for the troops to fight more efficiently, There would be no mandatory order for everyone to wear a helmet, If you don't want to wear it, you can choose to wear a cloth cap with eaves. So in the vast majority of relevant historical photos, Among our troops participating in the war, The highest percentage of helmets is worn by artillery, It is mainly used to defend the fragments of enemy artillery and various hard objects brought up by explosions in artillery warfare. Even some border militiamen wore helmets in large numbers, On the contrary, the impact is at the forefront, Infantry units carrying out a large number of mobile combat missions are rarely worn, Investigate its reason, It is for the infantry troops to carry out large-scale interspersed operations frequently. Exercise is enormous, It is really inconvenient to wear helmets, This approach has both advantages and disadvantages, It is not good to judge right or wrong here, but when facing such a horrible "killer bee" on the ground on 149, it is regrettable and regrettable that the heavy casualties caused by the low wearing rate of helmets have to be said. If they had worn helmets instead of military caps like Zhang Xiaobo, the casualties caused by the sting attack of "killer bee" would have been much smaller.孤儿巫马(赵文卓)在山野长大，自幼跟随师父学习太极。被父母遗弃的经历令他对世界充满仇恨；为解除马心中挥之不去的仇恨，他的师父不惜舍身成仁。Editor of 10,000 Yuan Wang Qing's "Finland Unconditional Basic Income Experiment Series Report": Cui Yu该剧聚焦养孩话题，讲述了一对年轻父母探索幸福、创造幸福的故事。在距离现代不久的未来，由於科技的进步，人类赖以代步的汽车早已完全被电动车所取代，每部车辆皆强制配备AI（人工智慧）自动驾驶的功能，配合著都市电脑交通管制系统，车祸事故与交通混乱的现象似乎都不再发生了……。秦旷陪着香荽先去了农家园圃。