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In the system, how do we need to reuse an object, if we repeatedly use the new operator to create the object at this time, it is a great waste of system resources. Since we use the same object every time, why can't we share it? This is also the reason why the model of enjoying yuan appears.One last thing on this subject, The 7.62 mm traced armour-piercing firebombs fired by the 81-1 family, Although the name is a little long, But compared with ordinary munitions, The difference is still well understood: Tracing and burning are simple, Is to add two corresponding drugs, The armor piercing is to replace the steel core behind the bullet's brass back armor (also known as bullet head) with a harder tungsten alloy core with stronger penetration to hard targets. The latter is also the tail-stabilized shelling penetrator used on the third generation of modern main battle tanks (abbreviation: APFSDS) is one of the two main materials (the other is the notorious, highly radioactive depleted uranium penetrator core, The user country is mainly the United States, while China mainly uses tungsten alloy penetrators, Less pollution and better performance, The United States does not need to. First, the United States does not pass the standard of tungsten treatment technology. Far from the level of our country, Secondly, the United States is a tungsten-poor country. It also wants to fully use tungsten alloy bombs, But it can't be used, But as a nuclear Power, There is a lot of depleted uranium as nuclear waste, so depleted uranium is selected as a substitute. As for tungsten alloy and depleted uranium, after putting aside the key additional condition of radioactive pollution, the pure question of who is better in armour-piercing performance is not directly related to this article, so it will not be described in detail).Don't assume that owners who benefit from abusive content are responsible for this. For example, it is not because a photo has received hundreds of fake "likes" that the owner buys it. We have seen countless cases of attackers extracting legal content in order to cover up their traces or try to make us punish innocent users.在雷老大等人惊骇的目光中，锈剑四分五裂。捷德奥特曼是圆谷株式会社出品的特摄剧。职场小白领莫西西应聘唐氏集团总经理助理，却误打误撞发现了总经理唐小山的真实身份——驱魔人。 莫西西逐渐感受到唐小山的善良和正义，唐小山也帮助莫西西拾起自尊，做一个坚强的女孩，两个人逐渐成为了知心朋友。 变异妖兽的首领叫做魔爵，他不择手段对付唐小山，将他打成重伤。 在莫西西的帮助下，唐小山不但复元，而且武功更进一步。唐小山挺剑再战江湖，一鼓作气除掉魔爵。 大战过后，唐小山和莫西西敞开心扉，走到了一起。俩人携手，为正义而战。Although the time of this practical activity is short, the enlightenment it leaves us is profound and long-term, and it is a solid step on our life road. Through participating in social practice activities attentively, I have known the society, realized my social position, defined my historical mission and stimulated my enthusiasm for learning. I will constantly adjust and perfect my knowledge structure, overcome various setbacks on the way forward, exercise my will and perseverance, and make preparations for adapting to future work.