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The problem of quality management is not what people don't know about it. The problem is what they think they do know.
生命诚可贵,道义价更高,“舍身取义”传唱千年,为了国家和民族,为了道义,无数仁人志士抛头颅酒热血,九死不悔。
Mental activity is the organism's dialogue with its environment.