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The above example shows that the third rule of the INPUT chain in the filter table is modified, and the action of this rule is modified to ACCEPT, and-s 192.168. 1.146 is the original matching condition in this rule. If this matching condition is omitted, the source address in the modified rule may become 0.0. 0.0/0.那你不会好好说啊。The winding Hejiang River has left the city. So fast, Guilin is ahead.可以预见，这棵树和树下的草木必将有一段繁荣茂盛的岁月。　　Morton Schmidt（乔纳·希尔 Jonah Hill 饰）和Greg Jenko（查宁·塔图姆 Channing Tatum 饰）两人是同学，后来又在警校相逢，两人互相帮忙，终于顺利从警校毕业，成为了好搭档。无奈两人只能当交警，抓抓小混混。后来他们加入了警方的卧底缉毒组织“21 Jump Street”，队长Dickon（艾斯·库珀 Ice Cube 饰）告诉他们，他们的任务是重回高中当卧底，找到那个向学生提供毒品的人。在学校里，他们了解到，学生们的毒品是从一个叫Eric（戴夫·弗兰科 Dave Franco 饰）的人手里来的，但案件并没有这么简单。同时，Schmidt也喜欢上Eric的一个朋友Molly，Jenko的化学老师似乎也对他挺感兴趣的。到底两人在学校的卧底调查会有怎样的结果？I nodded at this passage, Understand that what Zhang Xiaobo said is indeed reasonable, It is not a lie, Here I think it is necessary to give you one thing about popular science. So we have to say something digressive: The result of a real bullet hitting a petrol tank is not the same as that shown in most movies. One shot can explode the petrol tank, But this is not the case, Although a pure metal projectile will rub against the air at a speed of hundreds of meters per second to generate equivalent heat, And will produce sparks after hitting the metal oil drum, But none of this is enough to ignite petrol, Especially for gasoline with a large total amount, to ignite gasoline, please remember one thing-open flame must be used. In addition, gasoline is a flammable item, but it is not an explosive item in the true sense. Only after reaching a certain total amount can explosion be caused. If the total amount is insufficient, it can only cause combustion without explosion.　　大难不死的永琰被”陈素娘”所救，却意外在陈素娘身上发现与自己母后有关的玉坠，永琰于是化名”高世国”留在陈家暗中查访，却没想到堂堂一名皇子竟被陈家当成下人般使唤？