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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.尉缭先生？显然这个熟悉又陌生的名字让子婴感到很是震惊，没想到这位兵法大家，皇祖身边的第一流谋臣战略家，销声匿迹了许多年竟然还活着。讲述了东南亚某国华人干探张荼（任贤齐 饰），为救落入人贩之手的儿子小介，不惜孤身奔赴千里之外的他国，和亦敌亦友的钦貌苏（陈瑶 饰）一起捣毁一个庞大的国际人贩集团的故事。董小瑞（张蓝心 饰）是一位被男女老少都误认为男生的假小子，二十一年了，却从未离开过这个有七百多年历史的老镇。可在小瑞对暗恋多年一起长大的男闺密王峥（贺彬 饰）告白失败后，决定离开土镇去大城市的一家大服装公司应聘模特来证明自己也能拥有女人温柔、淑女的一面。可小瑞这样一个不会穿高跟鞋从来不穿裙子的土妞毫无悬念地被KO了一次。偶然机会却意外被法国请来的设计师Steven（胡兵 饰）相中出任首席模特。可在Steven远赴国外后小瑞从天堂跌落到地狱：服装公司从经理到模特等所有同事都排挤她。为了坚持与追逐自己的梦想，董小瑞做了腹黑设计师陈墨（立威廉 饰）的助理。小瑞穿梭在腹黑设计师、排挤她的一群模特中找寻实现自己梦想的机会……母爱是无法埋葬的自从昨天中午看了《寻秦记》的最新章节后，林虎的心神就被那精彩的情节吸引住，乃至一天都没有什么心思工作。The next four patterns, including this pattern, are all the relationships between classes and do not involve inheritance. When learning, you should remember induction and the diagram at the beginning of this article. The observer mode is well understood, similar to email subscription and RSS subscription. When we browse some blogs or wikis, we often see RSS icons. This means that when you subscribe to the article, you will be notified in time if there are subsequent updates. In fact, in a nutshell, when an object changes, other objects that depend on the object will be notified and will change with it! Objects are a one-to-many relationship. Let's look at the diagram first: