【单选题】按承受载荷的性质分类 , 减速器中的齿轮轴属于 。
【单选题】David has a sore tooth. We can also say David has a _____. [ ]
【单选题】按承受载荷的性质分类,减速器中的齿轮轴属于 ( )
【单选题】按承受载荷的性质分类,减速器中的齿轮轴属于( )
【多选题】下列情况下,应进行全面财产清查的有()。
【单选题】David has few questions to ask,_____?
【单选题】— Isn’t David an efficient manager? —Er, David is really great but sometimes he has problems ______his ideas.