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Transverse section discrimination shows that the conductor raw materials of different core wires have different colors, and the oxygen-free copper raw materials are uniform gold and copper colors from inside to outside. The cross section of copper-clad steel and copper-clad aluminum raw materials is grayish white, and the outer layer is only a thin copper color. The inner color of the copper-clad copper raw material is pale yellow, and the outer layer is copper.像许多9岁的男孩一样，伊莱·布拉弗曼相信地下室里有威胁生命的东西。有一天晚上，当他姐姐把他独自留在家里时，伊莱发现这个邪恶是真的还是全在他脑子里。伊莱所面对的可能会比他最可怕的噩梦更可怕。之所以这样，一来是怕小辈们日后为这些家产扯不清，二来就是为了以防万一。130-150大火瞬间向后堂扑去，余氏与吴家母女都在其中，为避大火，在家丁的护卫下冲出房间。可是这一刻，吕雉突然觉得在马车狭小的空间里，即便是在千军万马追击的逃亡路上。Total quality management mainly includes the establishment of a quality assurance system: in terms of resources, attention should be paid to the quality assurance of raw materials and purchased parts, and suppliers should be carefully selected; In terms of design, the JIT management system requires the designed products to have strong flexibility. In terms of personnel, it emphasizes the quality of people's work and the sense of responsibility for product quality. In the process of processing, attention should be paid to quality process control. Only under the effect of total quality management can we ensure good quality in every link of JIT system, make it try its best to achieve "zero defects" and realize "zero inventory".