XDD0000E022Z 简述质量改进的八个步骤。（4分）
["\uff081\uff09\u73b0\u72b6\u8c03\u67e5\uff1b\uff082\uff09\u539f\u56e0\u5206\u6790\uff1b\uff083\uff09\u786e\u5b9a\u4e3b\u8981\u539f\u56e0\uff1b\uff084\uff09\u5236\u5b9a\u5bf9\u7b56\uff1b\uff085\uff09\u5b9e\u65bd\u5bf9\u7b56\uff1b\uff086\uff09\u68c0\u67e5\u6548\u679c\uff1b\uff087\uff09\u5236\u5b9a\u5de9\u56fa\u63aa\u65bd\uff1b\uff088\uff09\u9057\u7559\u95ee\u9898\u548c\u4e0b\u6b65\u6253\u7b97\u3002\u6bcf\u98790.5\u5206\u3002"]