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2026版七下数学寒假自学讲义15讲

  • 2026-03-30 18:15:47
2026版七下数学寒假自学讲义15讲
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     今天给大家分享的是2026版七下数学寒假自学讲义15讲。15讲精品内容全覆盖，从相交线与平行线的基础几何，到实数的概念拓展，再到平面直角坐标系的坐标应用，最后深入二元一次方程组的解题技巧。趁寒假黄金预习期，提前吃透新学期核心知识点，领跑初一数学！

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  1. CONNECT:[ UseTime:0.000404s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000635s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001206s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000369s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000766s ]
  6. SELECT * FROM `set` [ RunTime:0.000315s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000775s ]
  8. SELECT * FROM `article` WHERE `id` = 464770 LIMIT 1 [ RunTime:0.001886s ]
  9. UPDATE `article` SET `lasttime` = 1775895002 WHERE `id` = 464770 [ RunTime:0.011056s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000359s ]
  11. SELECT * FROM `article` WHERE `id` < 464770 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000576s ]
  12. SELECT * FROM `article` WHERE `id` > 464770 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000518s ]
  13. SELECT * FROM `article` WHERE `id` < 464770 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000639s ]
  14. SELECT * FROM `article` WHERE `id` < 464770 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001305s ]
  15. SELECT * FROM `article` WHERE `id` < 464770 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002371s ]
0.094876s