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【PPT分享】选址问题及运输问题解法

  • 2026-10-30 22:18:01
【PPT分享】选址问题及运输问题解法
1.重心法
2.加权因素分析
3.成本一利润一产量定址分析
4.产销平衡表与单位运价表

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基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-11-10 23:09:31 HTTP/1.1 GET : http://h.sjds.net/a/561283.html
  2. 运行时间 : 0.084391s [ 吞吐率：11.85req/s ] 内存消耗：4,204.68kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=25a87af0380c7706fa2c919feb460673
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  1. CONNECT:[ UseTime:0.000785s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000951s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000436s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000355s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000551s ]
  6. SELECT * FROM `set` [ RunTime:0.000296s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000639s ]
  8. SELECT * FROM `article` WHERE `id` = 561283 LIMIT 1 [ RunTime:0.000418s ]
  9. UPDATE `article` SET `lasttime` = 1794323371 WHERE `id` = 561283 [ RunTime:0.001344s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000326s ]
  11. SELECT * FROM `article` WHERE `id` < 561283 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000442s ]
  12. SELECT * FROM `article` WHERE `id` > 561283 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000443s ]
  13. SELECT * FROM `article` WHERE `id` < 561283 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000437s ]
  14. SELECT * FROM `article` WHERE `id` < 561283 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000560s ]
  15. SELECT * FROM `article` WHERE `id` < 561283 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000599s ]
0.098773s