题目内容
几种零件在三台机床上加工，它们的工艺顺序相同。对此种排序问题，可用约翰逊-贝尔曼法则的扩展方法求解。（）
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零件按加工时间的大小安排加工顺序，加工时间最短者最先安排。这一安排加工顺序的方法，称为SPT规则。（）
Whenever a guest asks for something, you should promise to provide it right away.
If you have not caught what the guest said, you may say " what did you say, sir" or simply "Uh?"
When the restaurant is fully occupied, you should politely persuade the newly arrived guests to go to some other restaurant.
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