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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.影片是根据谢尔盖·卢科扬涅科(Sergei Lukyanenko)的三部曲(守夜人，守日人，黄昏使者)中的第二部《守日人》拍摄录制的。Above, by registering one or more delegate instances for the event with + =, in fact, you can also directly register methods for the event.The mobile phone is equipped with two WeChat messages, which can use the application doppelganger function. The following are the detailed operation steps for logging in to the two micro signals using the mobile phone:绿萝秀美微蹙，低声道：淮阴？是的，让飞影去找到这两个人。"Charming Card" Creates a New Format of Cultural Travel and Opens the Era of "Tourism Plus"该剧注重悬疑气氛的营造，把悬念一直维持到每一次的真相大白，并且重点突出技术侦查、层层推理，剧中将展示大量的破案手段。涉及法医学、毒物学、DNA鉴定、痕迹学、指纹学、微量物证、现场分析、弹道学、法庭昆虫学、犯罪现场重建、文件检验、声纹鉴定、颅骨复原、犯罪心理测试等等多种法庭科学学科，引人入胜，惊险刺激。