- 问题详情: 埃博拉出血热是由埃博拉病毒(EV)引起的一种急*传染病,病死率极高。请回答: (1)EV侵入机体后,首先攻击吞噬细胞,使吞噬细胞受损,进而抑制 免疫,导致机体防卫功能下降,病毒在体内迅速增殖。 (2)若要确诊EV感染者,可以根据____的特*,用基因工程生产的抗体对组织内EV...
- 11102
- 问题详情:EV71与肠道病毒 肠道病毒在病毒微生物学上的分类是属于微小病毒科中的肠道病毒群。肠道病毒71型,简称EV71。肠道病毒一般是以数字命名的,排列顺序代表着其发现的先后次序。按顺序,这种病毒被命名为肠道病毒71型。EV71为目前肠道病毒群中最晚发现的病毒,其感染...
- 12318
- 问题详情:词汇运用。根据句意及汉语提示填写单词。1.Whatdoyouthinkof________(卡通片)?2.Everythingis________(准备好的).Let'sstart.3.Whatisthe________(主要的)differencebetweenthetwopictures?4.Thequestionisvery________(简单的),soallthestudentscananswerit.5.Iwantt...
- 24495
- Analysisoncdma20001XEV-DOCoverageAnalysisofNetworkInteroperabilityBetweencdma20001xandEV-DOResearchoncdma20001xandEV-DOHybridTerminalInteroperabilityProblingtheBottlenecksofDownloadSpeedandOptimizationMethodsofthecdma2000EV-DONetwork该项禁令对高速EV-...
- 32170
- 问题详情:ItwasnotuntilIcametoBeijingthatIhadatasteofthesaying“Eventhoughtheeyesofastrangerarebig,theycannotseeeverything.”AvisittotheGreatWallshowedmeoneofmankind’s 61 (astonish)achievements.BuiltbyEmperorQinShihuangasadefenceagainstthe 62...
- 24200
- 问题详情:在研究微观粒子时常用电子伏特(eV)做能量的单位.1eV等于一个电子经过1V电压加速后所增加的动能.若电场中的a、b两点间的电势差为1V,将一电子从a点移到b点,电子克服电场力做功为1eV,则()A.场强方向一定由b指向aB.场强方向一定由a指向bC.电子的电势能增加1eVD.电子的电势能减少1...
- 29198
- 问题详情:关于电子伏(eV),下列说法中,正确的是( )A.电子伏是电势的单位 B.电子伏是电场强度的单位C.电子伏是能量的单位 D.1eV=1.60×1019J【回答】C 知识点:电势能和电势题型:选择题...
- 18571
- 问题详情: FormostthinkerssincetheGreekphilosophers,itwasself-evidentthatthereissomethingcalledhumannature,somethingthatconstitutestheessenceofman.Therewerevariousviewsaboutwhatconstitutesit,buttherewasagreementthatsuchanessenceexists---thatistosay,...
- 7928
- 问题详情:阅读填空先通读下面的短文,然后根据短文内容,在文章后的表格内填入一个最恰当的单词。每个空格只能填一个单词。EveryweekendinBritain,DIYshopsandgardencentresarealwaysfullofpeople.Alargenumberofpeoplespendtheirweekendsdoingimprovements(改进)totheirhome...
- 23807
- 问题详情: Interestisasvitaltolearningastheabilitytounderstand,even________so. A.more B.thatC.much D.most【回答】A知识点:形容词题型:选择题...
- 28620
- 问题详情:Anewstudysayselectronictoysarenothelpingbabieslearn."Evenifcompaniesaremarketingthemaseducational,they'renotteachingthebabiesanythingatthistime,"saidAnnaSosathestudy'sauthor.Researcherslistenedtoaudio(声音的)recordingsofparentsplayingwith...
- 4528
- 问题详情:说一说,写一写。下面是你们学校第一学期课外活动表,请你用英文告诉你的同学们并写出来Goodmorning,everyone.I'lltellyouwhatwe'lldoduringthisterm.1.We'll________________________________.2.We'll________________________________.3.We'll_________________...
- 4968
- 问题详情:CANYOUIMAGINEHOWHARDITWOULDBETOREADSENTENCESLIKETHIS?Everyoneofusgetssousedtopunctuationmarksthatnotmanyofusgivethemasecondthought.Actually,theancientGreekswrotethisway.Thelackofpunctuationmarksprobablydidn’tbothergoodreaders,though.Astheyre...
- 28504