2010年6月29日16时20分左右,某公司炼油厂原油输转站1个3万m的原油罐在清罐作业过程中,发生可燃气体爆燃事故,致使罐内作业人员3人死亡,7人受伤,造成直接经济损失150万元。根据上述情况,请判断,该起事故属于较大事故
错误
暂无解析
Directions:
Inthissectionyouwillheararecordedshortpassage.Thepassageisprintedinthetestpaper,butwithsomewordsorphrasesmissing.Thepassagewillbereadtwotimes.YouarerequiredtoputthemissingwordsorphrasesontheAnswerSheetinorderofthenumberedblanksaccordingtowhatyouhear.Ithinkwe'llmbeginnow.FirstI'dliketowelcomeyouallandthankyouforyourcoming,especiallyatsuchshortnotice.Iknowyouareallverybusyandit'sdifficulttotaketimeawayfromyour______formeetings.Asyoucanseeontheagenda,todaywewillfocusontheupcoming______.Firstwe'lldiscussthegroupsthatwillbecominginfromGermany.Afterthat,we'lldiscusstheNorthAmericanTours,______bytheAsiantours.Iftime______,wewillalsodiscusstheAustraliantourswhicharebookedforearlySeptember.Finally,I'mgoingtorequestsomefeedbackfromallofyou______lastyear'stoursandwhereyouthinkwecanimprove.
如何移动一条参考线()
下面选项中对色阶描述正确的是: