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HNU信号与系统期末试卷参考(2021)(共五套)

  • 2026-11-05 23:27:47
HNU信号与系统期末试卷参考(2021)(共五套)
在文库共享了五套信号与系统真题
（仅供参考哦）
先摆上21年的期末试卷给大家
其他四套麻烦大家移步至文库自行查看~
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END

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全程重兵封锁、北斗实时追踪,试卷安保到底图啥?

基本 文件 流程 错误 SQL 调试
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  1. CONNECT:[ UseTime:0.000762s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001002s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000408s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000348s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000646s ]
  6. SELECT * FROM `set` [ RunTime:0.000333s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000664s ]
  8. SELECT * FROM `article` WHERE `id` = 499141 LIMIT 1 [ RunTime:0.000391s ]
  9. UPDATE `article` SET `lasttime` = 1794176066 WHERE `id` = 499141 [ RunTime:0.001579s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000385s ]
  11. SELECT * FROM `article` WHERE `id` < 499141 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000519s ]
  12. SELECT * FROM `article` WHERE `id` > 499141 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000419s ]
  13. SELECT * FROM `article` WHERE `id` < 499141 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000977s ]
  14. SELECT * FROM `article` WHERE `id` < 499141 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000668s ]
  15. SELECT * FROM `article` WHERE `id` < 499141 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000844s ]
0.085196s