重大事故隱患是指存在于各種生產活動中的，有可能導致重大人員傷亡、傷害、財產損失或其他損失的意外事件發生的人的不安全行為、物的不安全狀態和管理上的缺陷等。
1、正確正確
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Itisbelievedthatgrammaranalysisandtranslationbegantobethebasicproceduresinforeignlanguageteachingfrom_______.
TheywillgetthepreparationdoneearlyinMay.
ltisoursincerehopethatyouwilldirectyourefforts__thepromotionofthisnewproductinyourmarket__ourmutualbenefit.
Alinguistictheoryisconstructedaboutwhat______isandhowitworks.
翻譯：WeadvisedyouinourletterofDec.1,thatwewouldliketoplaceatrialorderwithyoufor50piecesFlyingPigeonBicycles.
