题目内容
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。（）
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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.
When you express your apologies to your guest, you may say "I beg your pardon, sir.' in a falling tone.
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