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In terms of curriculum content, such APP products mostly inspect a single knowledge point in the form of games. The curriculum system is relatively weak and lacks explanation and guidance of knowledge points.In order to use SYN? Cookies to calculate the SYN-ACK serial number (that is, SYN? Cookies), the host must first combine some local password bits, a data structure including IP address and TCP port number, SYN initial sequence number, and some index data identifying the password bits. An MD5 digest is generated on top of all the above bytes, and then some bits are truncated from the hash value to put it into the SYN-ACK sequence number. Since the size of the sequence number is about a quarter of the total hash value, this truncation is necessary, but usually at least 3 bytes of hash bits are used for verification, which means that there are still nearly 2 24 possibilities to guess and verify cookies without knowing the password bits. In order to send out the hash value, some bits of cookies will reduce the upper limit value of MSS (Maximum Segment Length) contained in SYN and affect the index bits that identify the native password bits in the hash value.In addition, after the A staff is given, the big move has a considerable bonus to the damage thrown by T. (In the long-standing version, there was no A-stick effect for small size, and the upgrade had a direct bonus to T. Later, after IF increased the A-stick effect for small size, there was no bonus to T without A-stick, but the increase after A-stick was much larger than before, and a large number of attacks were added.)女主人公方若瑄幼年时在家里的老宅子遇到了一场事故，导致她失去了童年的记忆，之后被家人接到国外生活。方若瑄成年之后，父亲去世。她为了完成父亲遗愿，带着父亲的骨灰回到祖国。回国后的方若瑄再次回到了曾经家里的老宅子，此时的老宅子已经被建成了一所医学院。方若瑄来到学校之后发现，只有一口枯竭的玲珑井还保留着老宅子的影子。而且，每当她走到玲珑井前，脑海中就会闪过一些模糊记忆碎片。她隐约意识到这口井和自己失去的记忆存在某种联系，于是她申请了在医学院借读，以便更好的了解玲珑井。同时，她也认识了学生陈博飞，两人很快发生了恋情。方若瑄搬进了学校之后不久，却遇到了一系列诡异的事情，并得知曾经有一名女学生在此跳井自杀。她怀疑这一切就是这名跳井自杀女学生在作怪，而正在这时方若瑄的男友陈博飞也突然失踪……但是，真话要怎么说，说多少，她自有她的一番理论。Li Yifeng, born on May 4, 1987 in Chengdu, Sichuan, is a mainland actor, pop singer and film producer. He graduated from the School of Film and Television of Sichuan Normal University.