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【课件】选必三《确定实验式、分子式、分子结构》可下载

  • 2026-04-08 10:49:12
【课件】选必三《确定实验式、分子式、分子结构》可下载

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  1. CONNECT:[ UseTime:0.000670s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000796s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.004976s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002691s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000671s ]
  6. SELECT * FROM `set` [ RunTime:0.001361s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000823s ]
  8. SELECT * FROM `article` WHERE `id` = 491047 LIMIT 1 [ RunTime:0.007079s ]
  9. UPDATE `article` SET `lasttime` = 1775627967 WHERE `id` = 491047 [ RunTime:0.002710s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.001685s ]
  11. SELECT * FROM `article` WHERE `id` < 491047 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.005955s ]
  12. SELECT * FROM `article` WHERE `id` > 491047 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.005780s ]
  13. SELECT * FROM `article` WHERE `id` < 491047 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.012944s ]
  14. SELECT * FROM `article` WHERE `id` < 491047 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.074964s ]
  15. SELECT * FROM `article` WHERE `id` < 491047 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.011155s ]
0.226383s