《气瓶安全监察规程》规定气瓶的钢印标记是识别气瓶的依据。钢印标记必须准确、清晰、完整,以永久标记的形式打印在瓶肩或不可卸附件上。
1、正确正确
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重写句子:NotuntilhecrossedthelineandfeltthetapesnapagainsthischestdidJohnsonknowhehadwontherace.(loosesentence)
WhyweretheFrenchtroopsinCanadadefeatedbytheBritishduringtheSevenYears'War?
Itisvitalthatthework_______intime.
TheMississippi,whichissometimescalled________,hasplayedavitalroleinthehistoryoftheUnitedStates.
句子写作:HeisverybusypreparingIELTS.Hehasnotimetoplay.