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2025年5月实验期中试卷和答案:初二物理

  • 2026-11-10 05:19:22
2025年5月实验期中试卷和答案:初二物理
1-8、DACD  ACBB   9、（1）否  （2）高度差  （3）深度  （4）乙丙  10、（1）0.8  （2）略  （3）浮力与深度无关  （4）排开液体体积相同，液体密度越大，浮力越大  （5）3400  11、（1）水平  （2）匀速直线  1.6   （3）压力  接触面粗糙程度  （4）大  深度  12、（1）压力一定，受力面积越大，压强越小  （2）4.6N  竖直向下  13、（1）3N  （2）3N  （3）60Pa  14、（1）20N  （2）22N  （3）1220kg/m3

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基本 文件 流程 错误 SQL 调试
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  1. CONNECT:[ UseTime:0.000524s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000618s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000340s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000382s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000549s ]
  6. SELECT * FROM `set` [ RunTime:0.000266s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000664s ]
  8. SELECT * FROM `article` WHERE `id` = 491818 LIMIT 1 [ RunTime:0.000341s ]
  9. UPDATE `article` SET `lasttime` = 1794322885 WHERE `id` = 491818 [ RunTime:0.001159s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000322s ]
  11. SELECT * FROM `article` WHERE `id` < 491818 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000419s ]
  12. SELECT * FROM `article` WHERE `id` > 491818 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000344s ]
  13. SELECT * FROM `article` WHERE `id` < 491818 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000488s ]
  14. SELECT * FROM `article` WHERE `id` < 491818 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000595s ]
  15. SELECT * FROM `article` WHERE `id` < 491818 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000530s ]
0.093516s