关于病毒的论文500字开头英语
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最近不是60年吗,给一篇“我是中国人”吧!ladiesandgentlemen,boysandgirls,i'i'i'velearnedaboutzhangheng(张衡)andi'velearnedaboutzhenghe(郑和).whosaystheyellowrivercivilizationhasvanished(消失)?iknowthatmyancestorshavemademiracles(奇迹)onthisfertilelandandwe'whocanignorethefactthatwehaveestablishedourselvesasagreatstateintheworld,thatwehavedevisedourownnuclearweapons,thatwehavesuccessfullysentoursatellitesintospace,7intheworld?wehaveexperiencedtheplunders(掠夺)byothernations,yet,basedonsuchruins,therestillstandsournation----china,unyieldingandunconquerable!shesaid,“chinahasahistoryoffivethousandyears,fivethousandyearsago,chinatooktheleadintheworld,”itistruethatwe'restilladevelopingnation,butitdoesn'tmeanthatwecandespise(鄙视)wehavesuchalong-standinghistory,wehavesuchabundantresources,wehavesuchintelligentanddiligentpeople,wehavereasonstosayproudly:wearesuretotaketheleadintheworldinthefutureagain,forourproblemsarebig,butourambition(雄心)isevenbigger,ourchallenges(挑战)aregreat,ihaveinherited(继承)iamsure,thatwhereverigo,whateverido,ishallneverforgetthatiamchinese!thank女士们,先生们,男孩和女孩,我是中国人。我很自豪作为一个中国五千年的文明的后面。我已经了解了四大发明由我们的祖先。我曾学过长城和长江。我曾学过的张衡(张衡)和我学到关于郑和(郑和)。谁说黄河文明已消失(消失)吗?我知道我的祖先们做出奇迹(奇迹)在这富饶的土地,我们仍然使奇迹。谁能忽略了这个事实,我们证明了自己是一个伟大的国家,这在世界上我们已经发明了我们自己的核武器,我们已经成功把我们的卫星送入太空,我们的国民生产总值名列第7号的世界?我们已经经历了掠夺(掠夺)被其他国家,我们已经经历过战争。基于这样的废墟,还依然还在我们国家,那里,——中国,桀骜不驯的!我曾遇见一名美国观光客。她说,“中国有五千年的历史,但我们只有200年的历史了。五千年前,中国引领世界,而现在是美国领导。“我心里深深地打动了这些话。这是真的,我们仍然是一个发展中国家,但这并不意味着我们可以鄙视(鄙视)。我们有如此悠久的历史,我们有如此丰富的资源优势,我们有如此勤劳智慧的人民,我们有足够的值得骄傲的事。我们有理由自豪地说:我们想要在未来的世界,因为我们的问题是大的,但是我们的雄心壮志雄心(我们)是更大的挑战,挑战(都是伟大的,但我们将会更大。我是中国人。我有遗传性(继承)黑头发、黑眼睛。我有我的祖先继承的美德。我也已经接管了责任。我相信,无论我走到哪里,无论我做什么,我将永远不会忘记,我是中国人!
Ebola is a kind of rare and terrible virus which can cause humans and primates to be attacked by hemorrhagic It has a high mortality rate,between 50% to 90% Ebola virus is able to steady relatively at room Only remained above 60 ℃ over 30 minutes can we destroy its Further, it can be also killed completely with ultraviolet rays irradiating over 2 Its main cause of death was a stroke, myocardial infarction, hypovolemic shock or multiple organ
The Ebola virus, which has killed more than 670 people in West Africa, is a "threat" to the UK, Foreign Secretary Philip Hammond has told the BBC英国外交部长菲利普·哈蒙德透露,埃博拉病毒对英国是一种“威胁”。据悉该病毒在西非已导致670多人死亡A woman is being treated for 'Ebola-like' symptoms at the Queen Elizabeth's Hospital in Hong Kong after recently returning from a strip to A一名最近从非洲返港的女子由于出现“埃博拉疑似”病症在香港伊丽莎白医院接受治疗。The woman has been given the all-clear after testing negative for Ebola, according to South China Morning P据《南华早报》报道,该女子埃博拉病毒检查结果为阴性,已排除感染可能。The 39-year-old woman was kept in isolation while undergoing tests, but a hospital source said she did not have the virus and was in a stable 该名39岁女子在检查期间一直接受隔离治疗,但有医院知情人士称,她并未感染埃博拉病毒,情况稳定。Ebola virus first emerged in 1976 in outbreaks of Ebola hemorrhagic fever in Zaire and S The strain of Ebola that broke out in Zaire has one of the highest case fatalityrates of any human virus, roughly 90%埃博拉病毒最早于1976年在扎伊尔和苏丹地区爆发埃博拉出血热时被发现。扎伊尔型埃博拉病毒的致死率高达90%,是致死率最高的几种人类病毒之一。Symptoms include vomiting and diarrhoea, fever, weakness, headache and sore 感染病毒后会出现呕吐、腹泻、发烧、虚弱、头痛和喉咙痛等症状。Those struck down can also suffer internal and external The virus is spread through human There is no 病患还可能出现体内出血和体外出血。病毒通过人体接触传染,尚无有效治疗方法。
关于病毒的论文500字开头英语作文
The Ebola virus, which has killed more than 670 people in West Africa, is a "threat" to the UK, Foreign Secretary Philip Hammond has told the BBC英国外交部长菲利普·哈蒙德透露,埃博拉病毒对英国是一种“威胁”。据悉该病毒在西非已导致670多人死亡A woman is being treated for 'Ebola-like' symptoms at the Queen Elizabeth's Hospital in Hong Kong after recently returning from a strip to A一名最近从非洲返港的女子由于出现“埃博拉疑似”病症在香港伊丽莎白医院接受治疗。The woman has been given the all-clear after testing negative for Ebola, according to South China Morning P据《南华早报》报道,该女子埃博拉病毒检查结果为阴性,已排除感染可能。The 39-year-old woman was kept in isolation while undergoing tests, but a hospital source said she did not have the virus and was in a stable 该名39岁女子在检查期间一直接受隔离治疗,但有医院知情人士称,她并未感染埃博拉病毒,情况稳定。Ebola virus first emerged in 1976 in outbreaks of Ebola hemorrhagic fever in Zaire and S The strain of Ebola that broke out in Zaire has one of the highest case fatalityrates of any human virus, roughly 90%埃博拉病毒最早于1976年在扎伊尔和苏丹地区爆发埃博拉出血热时被发现。扎伊尔型埃博拉病毒的致死率高达90%,是致死率最高的几种人类病毒之一。Symptoms include vomiting and diarrhoea, fever, weakness, headache and sore 感染病毒后会出现呕吐、腹泻、发烧、虚弱、头痛和喉咙痛等症状。Those struck down can also suffer internal and external The virus is spread through human There is no 病患还可能出现体内出血和体外出血。病毒通过人体接触传染,尚无有效治疗方法。
Ebola is a kind of rare and terrible virus which can cause humans and primates to be attacked by hemorrhagic It has a high mortality rate,between 50% to 90% Ebola virus is able to steady relatively at room Only remained above 60 ℃ over 30 minutes can we destroy its Further, it can be also killed completely with ultraviolet rays irradiating over 2 Its main cause of death was a stroke, myocardial infarction, hypovolemic shock or multiple organ
Ebola is a kind of rare and terrible virus which can cause humans and primates to be attacked by hemorrhagic It has a high mortality rate,between 50% to 90%Ebola virus is able to steady relatively at room Only remained above 60 ℃ over 30 minutes can we destroy its Further, it can be also killed completely with ultraviolet rays irradiating over 2 Its main cause of death was a stroke, myocardial infarction, hypovolemic shock or multiple organ
关于病毒的论文500字开头英语翻译
Ebola is a kind of rare and terrible virus which can cause humans and primates to be attacked by hemorrhagic It has a high mortality rate,between 50% to 90%Ebola virus is able to steady relatively at room Only remained above 60 ℃ over 30 minutes can we destroy its Further, it can be also killed completely with ultraviolet rays irradiating over 2 Its main cause of death was a stroke, myocardial infarction, hypovolemic shock or multiple organ
Computer VirusA computer virus is a computer program that can copy itself and infect a computer without permission or knowledge of the The original may modify the copies or the copies may modify themselves, as occurs in a metamorphic A virus can only spread from one computer to another when its host is taken to the uninfected computer, for instance by a user sending it over a network or carrying it on a removable medium such as a floppy disk, CD, or USB Additionally, viruses can spread to other computers by infecting files on a network file system or a file system that is accessed by another Viruses are sometimes confused with computer worms and Trojan A worm, however, can spread itself to other computers without needing to be transferred as part of a A Trojan horse is a file that appears harmless until In contrast to viruses, Trojan horses do not insert their code into other computer Many personal computers are now connected to the Internet and to local-area networks, facilitating their Today's viruses may also take advantage of network services such as the World Wide Web, e-mail, and file sharing systems to spread, blurring the line between viruses and Furthermore, some sources use an alternative terminology in which a virus is any form of self-replicating The term comes from the term virus in A computer virus reproduces by making (possibly modified) copies of itself in the computer's memory, storage, or over a This is similar to the way a biological virus Some viruses are programmed to damage the computer by damaging programs, deleting files, or reformatting the hard Others are not designed to do any damage, but simply replicate themselves and perhaps make their presence known by presenting text, video, or audio Even these benign viruses can create problems for the computer They typically take up computer memory used by legitimate As a result, they often cause erratic behavior and can result in system In addition, many viruses are bug-ridden, and these bugs may lead to system crashes and data There are many viruses operating in the general Internet today, and new ones are discovered every
Ebola is a kind of rare and terrible virus which can cause humans and primates to be attacked by hemorrhagic It has a high mortality rate,between 50% to 90% Ebola virus is able to steady relatively at room Only remained above 60 ℃ over 30 minutes can we destroy its Further, it can be also killed completely with ultraviolet rays irradiating over 2 Its main cause of death was a stroke, myocardial infarction, hypovolemic shock or multiple organ
关于病毒的论文500字开头英语怎么说
Ebola is a kind of rare and terrible virus which can cause humans and primates to be attacked by hemorrhagic It has a high mortality rate,between 50% to 90%Ebola virus is able to steady relatively at room Only remained above 60 ℃ over 30 minutes can we destroy its Further, it can be also killed completely with ultraviolet rays irradiating over 2 Its main cause of death was a stroke, myocardial infarction, hypovolemic shock or multiple organ
请英语高手吧 这里不是英语区
Ebola is a kind of rare and terrible virus which can cause humans and primates to be attacked by hemorrhagic It has a high mortality rate,between 50% to 90% Ebola virus is able to steady relatively at room Only remained above 60 ℃ over 30 minutes can we destroy its Further, it can be also killed completely with ultraviolet rays irradiating over 2 Its main cause of death was a stroke, myocardial infarction, hypovolemic shock or multiple organ
关于病毒的论文500字开头怎么写
病毒有多种!攻击方式也是多种的!我建议你先廉洁的概括下病毒的起源、发展史!!然后挑选一种你比较熟悉的病毒来分析下此病毒是通过哪几个漏洞进入的!他以什么方式进入!而后讲讲他有什么危害!攻击手段是什么!
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1计算机病毒的内涵、类型及特点计算机病毒(Computer Virus )在《中华人民共和国计算机信息系统安全保护条例》中被明确定义为:“指编制或者在计算机程序中插入的破坏计算机功能或者破坏数据, 影响 计算机使用并且能够自我复制的一组计算机指令或者程序代码”。自80年代莫里斯编制的第—个“蠕虫”病毒程序至今,世界上已出现了多种不同类型的病毒。在最近几年,又产生了以下几种主要病毒:1.1“美丽杀手”(Melissa)病毒。代写论文 这种病毒是专门针对微软 电子 邮件服务器MS Exchange和电子邮件收发软件Out1ookExpress的word宏病毒,是一种拒绝服务的攻击型病毒,能够影响计算机运行微软word97、word2000和Outlook。这种病毒是—种Word文档附件,由E—mail携带传播扩散。由于这种病毒能够自我复制,一旦用户打开这个附件,“美丽杀手’镝毒就会使用Outlook按收件人的Outlook地址簿向前50名收件人自动复制发送,从而过载E—mail服务器或使之损坏。“美丽杀手”病毒的扩散速度之快可达几何级数.据计算,如果“美丽杀手”病毒能够按照 理论 上的速度传播,只需要繁殖5次就可以让全世界所有的 网络 用户都都收到—份。“美丽杀手”病毒的最令人恐怖之处还不仅是拒绝电子邮件服务器.而是使用户的非常敏感和核心的机密信息在不经意问通过电子邮件的反复传播和扩散而被泄漏出去,连扩散到了什么地方可能都不得而知。>代写工作 总结 I2尼姆亚变种W(Worm.Nimayaw)。该病毒通过感染文件传播,可造成用户文件损坏,无法运行。由于被该病毒感染的文件,图标会变为一只举着三炷香的熊猫,因此该病毒又被称作“熊猫烧香”。它是一个能在WIN9X/NT/2000/XP/2003系统上运行的蠕虫病毒。该变种会感染用户计算机上的EXE可执行文件。受感染的计算机还会出现蓝屏、频繁重启以及系统硬盘中数据文件被破坏等现象。该病毒可通过局域网进行传播,进而感染局域网内所有计算机系统,最终导致整个局域网瘫痪。1.3手机病毒。也许很多人没有听说的,即使听说了,也不会觉得它有多大的危害。最近几天,金山反病毒中心发布了—个名为SymbOS.Doomboot.G的木马手机病毒,该病毒隐蔽性极强,一旦手机用户中招以后。对自己的手机将是—个灭顶之灾。轻则手机里面的信息将全部销毁,重则手机将呈现死机状态,无法正常启动。这样的危害程度丝毫不比电脑病毒弱多少。1.4情人节(vbs.Valentin) 。情人节(vbs.Valentin)病毒是一个会写情书的病毒。它会将自身用脚本加密引擎加密后插入到HTML文件中,病毒运行时会产生—个名为Main.htm的病毒文件。并拷贝到系统目录中。并搜索outlook的地址薄中的所有邮仁址,向这些地址发送标题为:Feliz s“ valentin. 内容 为:Feliz s“ valentirL Porfavor visita.的病毒邮件。病毒会在每个月的14号发作,发作时会以一封西斑牙情书的内容覆盖掉硬盘中的所有文件,并将覆盖过的文件扩展名全部改为.txt,使用户的系统完全崩溃。15桑河情人(VBS.San)病毒。豸婀睛人(VBSSan)病毒是—会删除了你的文件还要祝你情人节快乐的病毒。病毒运行时会产生—个Loveday14一hta的文件,该文件是编译过的病毒格式,可以被系统自动执行。病毒会将这个情人节的文件放入系统的启动目录,每次开机会病毒会自动运行。该病毒在每个月8、14、23、29号发作,发作时会将c盘的所有根目录都保留,只将这些根目录中的所有文件及子目录都删除,而且还会建立一个名为:“happysan—valentin’捕人节快乐向目录,来示威。用户除了系统崩溃外也只能苦笑了。1,6 CIH病毒。据悉,CIH病毒已给 中国 计算机用户造成了巨大的损失。近来又出现了CIH病毒的一种升级版本CIHvl-2病毒。CIHvl-2病毒会攻击硬盘及pc机的bios芯片,造成系统崩溃,甚至损坏硬件。CIHvl-2病毒被定时在4月26 日对被感染计算机的bios芯片和硬盘驱动器发起攻击。该病毒发作后,会造成硬盘数据的明显减少,不能开机或不能重新启动计算机。CIH病毒基本上是通过互联网络或盗版软件来感染windows 95或98的xe文件的。在执行被感染文件后,CIH病毒就会随之感染与被执行文件接触到的其他程序。病毒在4月26日被触发后,它将硬盘上最起决定性作用的部分用垃圾代码覆盖,同时,它试图改写bioso如果bios是可写的,像当前大多数计算机一样,那么bios将会被病毒破坏。一旦bios被破坏,系统将由于无法启动而不能使用。实际上,CIH病毒对硬盘的攻击能力也特别强,可能会使硬盘E的数据丢失,甚至使硬盘不得不进行低级恪式化 电脑病毒并非是最近才出现的新产物,事实上,早在一九四九年,距离第一部商用电脑的出现仍有好几年时,电脑的先驱者约翰·范纽曼(John Von Neumann)在他所提出的一篇论文“复杂自动装置的理论及组织的进行”,即已把病毒程序的蓝图勾勒出来,当时,绝大部分的电脑专家都无法想像这种会自我繁殖的程序是可能的,可是少数几个科学家默默的研究范纽曼所提出的概念,直到十年之后,在美国电话电报公司(AT&T)的贝尔(Bell)实验室中,这些概念在一种很奇怪的电子游戏中成形了,这种电子游戏叫做“磁蕊大战”(core war)。 磁蕊大战的玩法如下:两方各写一套程序,输入同一部电脑中,这两套程序在电脑记忆系统内互相追杀,有时它们会放下一些关卡,有时会停下来修理(重新写)被对方破坏的几行指令;当它被困时,也可以把自己复制一次,逃离险境,因为它们都在电脑的记忆磁蕊中游走,因此得到了磁蕊大战之名。 在那些日子里,电脑都没有连线,而是互相独立的,因此并不会出现病毒瘟疫。如果有某部电脑受到“感染”,失去控制,工作人员只需把它关掉便可。但是当电脑连线逐渐成为社会结构的一部份之后,一个或自我复制的病毒程序便很可能带来无穷的祸害了。因此长久以来,懂得玩〔磁蕊大战〕游戏的电脑工作者都严守一项不成文的规定:不对普通大众公开这些战争程序的内容。 1983年,这项规定被打破了.科恩.汤普逊(Ken Thompson)是当年一项杰出电脑奖得奖人。在颁奖典礼上,他作了一个演讲,不但公开地证实了电脑病毒的存在,而且还告诉所有听众怎样去写自己的病毒程序。他的同行全都吓坏了,然而这个秘密已经流传出去了。1984年,情况愈复杂了。这一年,“科学美国人”月刊(Scientific American)的专栏作家杜特尼(A.K.Dewdney)在五月号写了第一篇讨论“磁蕊大战”的文章,并且只要寄上两块美金,任何读者都可以收到它所写的有关写程序的纲领,在自己家中的电脑中开辟战场。 对付原始病毒只要注意“个人卫生”就不会“生病” 电脑病毒最初诞生时,最原始的技术原理是利用一段程序大量侵占电脑系统的资源,阻碍其它程序的运行;从此,开始出现利用非正常的程序代码,在用户未知的情况下,进行非法操作、妨碍电脑正常运行、破坏电脑中的信息数据等行为。 病毒最初的传播途径是自我复制、通过软盘、后来的 C D-ROM等介质;最初的病毒是自毁性质的,也就是破坏电脑的同时也破坏自身的运行环境,一旦将电脑硬盘彻底格式化,所有类型的病毒都会自然消失;病毒最初的表现类型为可执行文件,诸如 E XE、COM、DLL等后缀,如果被感染的病毒的文件一旦被修改了文件后缀,则病毒无法传染,也就是说病毒的规律性很强,只要稍加培训,就可以很快掌握发现病毒发作的规律。 所有病毒的最初特性决定了电脑使用者的使用习惯成为一个反病毒的关键———只要注意“个人卫生”就不会“生病”,因此,对于一些极端的电脑用户来说,反病毒软件仅仅是一种保险机制,而不是必需品;而对更多的用户来说,反病毒软件的意义更像是生病以后的治疗药品。 新病毒自动上门防不胜防 红色代码之后的各种病毒与原始病毒的根本不同——就如同艾滋病、炭疽热与感冒病毒之间的差别,只要身体健康,注意个人卫生,就不会得感冒;但是,身体再健康、个人行为再规范,也无法避免感染艾滋病、炭疽热等严重病毒的感染。艾滋病等病毒和红色代码一样危害性更大,远大于一般的感冒病毒;都是通过正常渠道进行传播,而不再是像原始病毒一样具有非常明显的特征;更为严重的是,红色代码和炭疽热一样,传播的速度极快,生命力极其顽强,因此,就使得大量采用传统方式进行病毒防范的用户遭受巨大伤害。 由于出现了这样的病毒,因此促使越来越多的用户开始改变传统的使用习惯,用反病毒软件的实时监控功能来武装自己,由此促使了最近的反病毒软件的热销。 这种热效以及性型病毒技术的出现,对反病毒软件和企业提出了新的要求,就像感冒病人和感染艾滋病、炭疽热的病人之间对于医疗设备和医疗服务机构的水平要求是不同的一样,现在的反病毒软件已经不再是一个单纯的软件,而是构件在软件平台上的一个整体服务体系。这就要求反病毒软件本身具备足够的技术水平和功能来承载这样的复杂服务和要求。 最后,病毒的技术是不断地变化的,因此信息安全和反病毒的产品与服务也必须随之变化,而人们使用电脑的习惯也将发生根本的变化。我认为养成良好的使用电脑习惯至少现在应注意如下事项: 1、平常准备使用的软盘,写保护。检查电脑的任何问题,或者是解毒,最好在没有病毒干扰的环境下进行,才能完整测出真正的原因,或是彻底解决病毒的侵入。 2、重要资料,必须备份。 3、尽量避免在无防毒软件的机器上使用电脑可移动磁盘。一般人都以为不要使用别人的磁盘,即可防毒,但是不要随便用别人的电脑也是非常重要的,否则有可能带一大堆病毒回家。 4、使用新进软件时,先用扫毒程序检查,可减少中毒机会。 5、准备一份具有查毒、防毒、解毒及重要功能之软件,将有助于杜绝病毒。 6、遇到电脑有不明音乐传出或宕机时,而硬盘的灯持续亮着,应立刻关机。发现电脑 H DISK的灯持续闪烁,可能是病毒正在格式化硬盘。 7、若硬盘资料已遭到破坏,不必急着格式化,因病毒不可能在短时间内,将全部硬盘资料破坏,故可利用灾后重建的解毒程序,加以分析,重建受损状态。因为重建硬盘是有可能的,救回的机率相当高。 8.不明信件不要打开。 9.共享目录要有密码。 10.及时升级操作系统补丁程序及反病毒程序。 11、请尊重原产品之知识产权,并支持国内自己开发的优良软件。 希望你能满意! 悬赏分要给喔!!!
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