大型机械作业或多机配合作业时 ,不需要设专人统一协调指挥。
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句子写作:”HappyChristmas“hesaid.
英语翻译:instrumentofratification
AllplaysarealiketomejustasallmusicisaliketoTony.()
WhichofthefollowingisnottrueaboutCanada'smanufacturingtoday?
Ayearlater,withthenation’seconomy________,Bush’sapprovalratingdroppedbelow40percent