当气门座圈工作面低于汽缸盖平面0.5mm时，应更换气门座圈。
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Herfatherleftherallhismoneywhenhedied,whichmadeherfinancially_(dependent)
We_____knowledgefromourfamilies,schools,jobs,andthemassmedia
Robots,___(become)increasinglyprevalentinfactoriesandindustrialplantsthroughoutthedevelopedworld,areprogrammedandengineeredtoperformindustrialtaskswithouthumanintervention.
电话是在1876年发明的。翻译
怎样认识产业结构的类型?