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初中数学九年级上册电子课本免费下载

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初中数学九年级上册电子课本免费下载

初中数学

九年级上册

   学段：初中

   科目：数学

   年级：九年级

   册次：上册

   版本：统编版

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  1. CONNECT:[ UseTime:0.000677s ] mysql:host=127.0.0.1;port=3306;dbname=no_yeyulingfeng;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001478s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.004338s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001119s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001449s ]
  6. SELECT * FROM `set` [ RunTime:0.007806s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001497s ]
  8. SELECT * FROM `article` WHERE `id` = 466368 LIMIT 1 [ RunTime:0.012102s ]
  9. UPDATE `article` SET `lasttime` = 1770212427 WHERE `id` = 466368 [ RunTime:0.029049s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.008925s ]
  11. SELECT * FROM `article` WHERE `id` < 466368 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.008837s ]
  12. SELECT * FROM `article` WHERE `id` > 466368 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001190s ]
  13. SELECT * FROM `article` WHERE `id` < 466368 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002085s ]
  14. SELECT * FROM `article` WHERE `id` < 466368 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.017304s ]
  15. SELECT * FROM `article` WHERE `id` < 466368 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.024064s ]
0.307475s