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平面几何训练题2026-1112

  • 2026-11-13 00:41:53
平面几何训练题2026-1112

题目由余师傅原创，引用请注明出处！

⊿ABC外心为O，AD为BC边上的高线，∠ADB的内角平分线交AB于点E，∠ADC的内角平分线交AC于点F，BF与CE交于点L,⊙(DEF)再交BC于点G。求证：AO、LG、⊙(ABC)共点。

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一年级20以内的进位加法口算练习题|电子版可打印

基本 文件 流程 错误 SQL 调试
  1. 请求信息 : 2026-11-13 06:29:37 HTTP/1.1 GET : http://www.sjds.net/a/546288.html
  2. 运行时间 : 0.076169s [ 吞吐率：13.13req/s ] 内存消耗：4,542.84kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=61da8f416c84fc769a2a574b81eb559e
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  1. CONNECT:[ UseTime:0.000640s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000928s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000505s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000436s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000629s ]
  6. SELECT * FROM `set` [ RunTime:0.000353s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000840s ]
  8. SELECT * FROM `article` WHERE `id` = 546288 LIMIT 1 [ RunTime:0.000446s ]
  9. UPDATE `article` SET `lasttime` = 1794522577 WHERE `id` = 546288 [ RunTime:0.001397s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000316s ]
  11. SELECT * FROM `article` WHERE `id` < 546288 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000425s ]
  12. SELECT * FROM `article` WHERE `id` > 546288 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000376s ]
  13. SELECT * FROM `article` WHERE `id` < 546288 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000571s ]
  14. SELECT * FROM `article` WHERE `id` < 546288 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000706s ]
  15. SELECT * FROM `article` WHERE `id` < 546288 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000776s ]
0.086204s