1、、使用planet . 2222222222222222222222222222222 sideredtheworstnuclearpowerplantaccidentinhistory and it is the only one classified (已分類) asalevel7eventontheinternationalnucleareventscale.(規(guī)模)、the Chernobyl nuclear accident main causes， Operating (運(yùn)行) instructionsanddesigndeficinces (不足)，Operator error

2、(錯(cuò)誤) initially (最初) faulted， thereactorhadantoruslylargepositivevoid (無效) coefficient (系數(shù))amorecertificateflaw (缺點(diǎn)) was in the design of the control rods (權(quán)利thatareinsertedintothereactortoslowdownthereaction . thedevertersoftherectreorplicationderdiscontionofeventstobeimportableandthereforedotoallow

3、forthecreationofemergencypr eorticati 受到放射線輻射的杜斯特是西部地區(qū)的蘇聯(lián)，是北歐斯堪的納維亞半島的easterneuropeandthenordicscandinavian Peninsula. Ukraine、belarusandrusiaarethemostpolluted .Pollution scales、aftermath1) internationalspreadofradioactivesubstances healthofplantworkers和local people4) residualradioactivityintheenvi

4、ronment，mapofradiationlevelsin 1996 aroundchenobyl . chernobylaccident殺了30多人135人， 有000人避難了In 2006還有其他的報(bào)告書. 復(fù)活的是所有人都和以前不一樣的the malformation fetus stillbirthduetothelong-termeffectsofradioactive 22222222222222222222222222222222 over8tonsleakageofstrongradiation.unit4ussubsisquentyreinforedconcreteseal， 石棺，石棺。 sarcophagus hasbeeinfornearly 25 years立即ithasbeentheappearanceofcracks.ukrainehopesinthe sarcophaus ontheins