焊割作业前必须按规定办理“三级动火”手续。进行焊割作业时，必须配备灭火器材，并指派监护人员。
1、正确正确
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Thefarmingmethodshavebeen________improvedwiththeinventionofthenewmachine.
AfaultlinerunsthelengthofNewZealand,whichmeansthatitoftenhas________.
TheFinancier,TheTitanandTheStoicbyTheodoreDreiserarecalledhis“Trilogyof().”
In1950,()wasawardedtheNobelPrizefortheanti-racistIntruderintheDust.
WhichofthefollowingisNOToneoftheextra-linguisticfactorsthatcausechangesinmeaning?
