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八上物理期中复习光现象易混点整理

  • 2026-11-06 00:09:00
八上物理期中复习光现象易混点整理

八上物理期中复习✨光现象易混点整理
把成语和光学原理对应起来，是选择题高频考点。
区分诀窍：
👉光沿直线传播：影子、小孔成像、视线被挡住
👉光的反射：平面镜成像类（水中倒影）
👉光的折射：看起来物体位置偏移
考前过一遍，避开易错坑！
#八年级物理#豆包

河南,1小时前,
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部易辰:专项复习三(59)

基本 文件 流程 错误 SQL 调试
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  1. CONNECT:[ UseTime:0.000562s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000799s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000410s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000368s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000629s ]
  6. SELECT * FROM `set` [ RunTime:0.000316s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000569s ]
  8. SELECT * FROM `article` WHERE `id` = 538309 LIMIT 1 [ RunTime:0.000475s ]
  9. UPDATE `article` SET `lasttime` = 1793896125 WHERE `id` = 538309 [ RunTime:0.001163s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000344s ]
  11. SELECT * FROM `article` WHERE `id` < 538309 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000441s ]
  12. SELECT * FROM `article` WHERE `id` > 538309 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000410s ]
  13. SELECT * FROM `article` WHERE `id` < 538309 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000588s ]
  14. SELECT * FROM `article` WHERE `id` < 538309 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000719s ]
  15. SELECT * FROM `article` WHERE `id` < 538309 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000743s ]
0.087898s