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收藏 | 2019年AMC数学竞赛12A考试真题(含答案)

  • 2026-08-26 05:23:24
收藏 | 2019年AMC数学竞赛12A考试真题(含答案)

很多同学都会在课余参加竞赛，这里给大家分享2019年AMC数学竞赛12A考试真题，有意向的学生可以收藏使用。

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答案：

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  1. CONNECT:[ UseTime:0.091261s ] mysql:host=42.236.82.134;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.058261s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.051881s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.050935s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.050320s ]
  6. SELECT * FROM `set` [ RunTime:0.061379s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.051231s ]
  8. SELECT * FROM `article` WHERE `id` = 511776 LIMIT 1 [ RunTime:0.051174s ]
  9. UPDATE `article` SET `lasttime` = 1787717637 WHERE `id` = 511776 [ RunTime:0.070739s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.051735s ]
  11. SELECT * FROM `article` WHERE `id` < 511776 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.076527s ]
  12. SELECT * FROM `article` WHERE `id` > 511776 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.056998s ]
  13. SELECT * FROM `article` WHERE `id` < 511776 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.158466s ]
  14. SELECT * FROM `article` WHERE `id` < 511776 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.163524s ]
  15. SELECT * FROM `article` WHERE `id` < 511776 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.114754s ]
1.193276s