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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.《大西洋帝国》第二季再现了美国禁酒令时期（1920-1933年）大西洋城这个海滨小城阴暗面的生存状况。《海滨帝国》的编剧是《黑道家族》的编剧特伦斯·温特，该剧根据作家Nelson Johnson的原著《海滨帝国：大西洋城的诞生，鼎盛以及堕落》(Boardwalk Empire:The Birth,High Times and Corruption of Atlantic City)改编。　　相传清朝末年的皇族端王，曾收敛了一大批财宝并隐藏起来，后因他得罪慈禧太后被满门抄斩，只留得一个幼女碧云格格随唱堂会的“庆生班”逃走。从此，民间和各方势力都想尽办法，欲寻获这批财宝。呵，想不到自己还有成为大反派的机会。究竟这里曾发生过什么样的惨剧？退休的黑帮首领查理·阿切尔被一个凶猛的街头帮派谋杀，目睹一切的莉齐·戴维斯报警，但证词遭到警方质疑。于是查理的兄弟同是黑帮的里奇·阿切尔开始进行调查，用自己的方式对这些年轻罪犯进行惩戒。Find the learning community: Because a large amount of knowledge exists in the practice of the learning community, not in books, effective learning is not to close the door and practice hard, but to find your own learning group. For example, programmers practice programming on websites like GitHub.