The inventor of ____ dishwasher，American Josephine Cochrance，loved to give        dinner parties，which was to contribute to his success.

A．不填；the

B．the；the

C．the；不填

D．a；the

流程切换应实行挂牌作业，实施切换作业的人员应从值班室取牌，并经（）确认后方可进行切换。

A.领导

B.技术员

C.班组长

D.自己