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月考复习八上物理2.4噪声的危害与控制,月考必考

  • 2026-10-02 02:16:29
月考复习八上物理2.4噪声的危害与控制,月考必考
八上物理｜2.4噪声的危害与控制，月考必考
很多学生一碰到噪声控制的题目就混淆！分不清是声源处、传播过程还是人耳处减弱噪声。这份笔记整理八上物理《噪声的控制》核心考点，归纳三类减弱噪声的实例，标注选择题易错陷阱。适合课前预习、睡前默写，考前快速复盘，吃透这一节，考试不踩坑✨
#初中物理 #八年级物理 #噪声的控制 #物理知识点 #中考物理
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  1. CONNECT:[ UseTime:0.000820s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001105s ]
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  6. SELECT * FROM `set` [ RunTime:0.000263s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000696s ]
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  9. UPDATE `article` SET `lasttime` = 1790904194 WHERE `id` = 518457 [ RunTime:0.001324s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000306s ]
  11. SELECT * FROM `article` WHERE `id` < 518457 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000418s ]
  12. SELECT * FROM `article` WHERE `id` > 518457 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000345s ]
  13. SELECT * FROM `article` WHERE `id` < 518457 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000494s ]
  14. SELECT * FROM `article` WHERE `id` < 518457 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000591s ]
  15. SELECT * FROM `article` WHERE `id` < 518457 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000617s ]
0.098901s