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甲、乙两台机床生产同一种零件,并且每天产量相等,在6天中每天生产零件中的次品数依...
甲、乙两台机床生产同一种零件,并且每天产量相等,在6天中每天生产零件中的次品数依次是:甲:3、0、0、2、0、1;乙:1、0、2、1、0、2.则甲、乙两台机床中性能较稳定的是 .
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