操作人员离机时,需将发动机(),并使用()。 ["A、发动","B、熄火","C、挂档拉紧手制动器","D、急刹车"]
DEU的地址编码电门在() ["控制器内","DEU内","DEU安装底座内","PTP内"]
车床主轴轴向窜动太大时,将使加工的工件()。 ["端面中凸","端面中凹","端面振摆超差"]
税务机关征收税款,必须向纳税人开具()。 ["扣款凭证","收据","发票","完税凭证"]
动轴承内圈与轴颈配合过盈量太大时,其装配方法可采用()。 ["敲入法","压入法","温差法"]
根据共析钢的“C”曲线,过冷奥氏体在A1线以下等温转变的组织产物有P型组织,()组织和M组织等