2022年八年级物理上第二单元声现象测试与知识点总结 .pdf

八年级物理第二章声现象测试题班级姓名得分一、选择题（每题4 分，计 56 分）1、“不敢高声语，恐惊天上人”，这里的“高”是指声音的（A）A、响度 B、音调 C、音色 D、频率2、宇航员在飞船舱外工作时，他们之间的对话必须借助电子通讯设备才能进行，而在飞船舱内却可以直接对话，其原因是（B）A太空中噪声太大 B太空是真空，不能传声C用通讯设备对话更方便 D声音只能在地面附近传播3、我们生活在个充满声音的世界中，关于声音的下列说法正确的是（A）A声音是由于物体的振动产生的B声音是一种波,它可以在真空中传播 C 我们能够辨别不同乐器发出的声音,是因为它们的响度不同 D 我们常说声音“震耳欲聋”，是指它的音调很高4、有一根很长的空心钢管，甲同学在一端敲打钢管一下，乙同学在钢管的另一端可以听到（B）A 一次声音 B两次声音 C三次声音 D四次声音5、关于扩音机的作用，下列说法中正确的是 A A改变响度 B改变音调 C改变音色 D减小声音的分散6、初次用收录机把自己的歌声录下，再播放自己录制的磁带的声音好象不是自己的声音，其原因是（D）A收录机质量不太好，录制的声音失真B歌声经录制后转化为电信号，放磁带时是电信号转化为声音C平时人们听见自己的声音主要是通过骨骼将声带发出的声音传到内耳的，他与经空气传过来的声音有差别D录放磁带时，转速不一致7、如图所示，兰兰做有关声现象的实验时，将一个正在发声的音叉贴近面颊，目的是为了（A）A感受发声音叉的振动 B体验发声音叉的温度 C估算发声音叉的质量 D判断声音的传播速度8、一种新型保险柜安装有声纹锁，只有主人说出事先设定的暗语才能打开，别人即使说出暗语也打不开锁。这种声纹锁辨别主人声音的依据是（A）A音调 B音色 C响度 D声速9、往保温瓶里灌开水的过程中.听声音就能判断壶里水位的高低，因为（A）A随着水位升高，音调逐渐升高 B随着水位升高，音调逐渐降低C灌水过程中音调保持不变,音响越来越大D灌水过程中音调保持不变,音响越来越小10、下列操作中，能改变物体发出声音的音调的是（D）A用力拨动琴弦 B 给二胡的弦上涂一些松香C 用力敲打鼓 D 转动小提琴的旋钮调节弦的松紧程度11、为了使学生在教室上课时免受周围环境噪声干扰，下面的措施中合理有效的是（B）A教室内保持安静，不讲话 B在教室周围植树C每个学生都戴一个防噪声耳罩 D在教室内安装噪声监测装置12、噪声严重污染环境，影响人们的生活和工作，已成为社会公害。下列措施中不能减弱噪声的是（C）A机动车辆在市内严禁鸣笛 B汽车排气管上安装消声器C清除城市垃圾，保持环境整洁 D在城市街道两旁种草植树13、百米赛跑时，终点的计时裁判员正确的计时方法是（B）A听到发令员的枪声开始计时 B看到发令员的发令枪冒烟开始计时C听到发令员的最后一声口令开始计时D看到最先起跑的运动员起跑开始计时14、如图所示，是用示波器显示的不同乐器发出不同声波的波形图，其中频率最大的是（B）长笛小提琴手风琴二胡 A B C D 二、填空题(每空 2 分，计 44 分)15、声音是由物体的_产生的，声音的传播需要_，真空中不能传播声音.声音不仅可以在空气中传播，还可以在和中传播。16、渔民可以利用电子发声器把鱼吸引到网里来，表明能传声；“土电话”表明能传声。17、比较牛和蚊子的叫声，_的叫声音调较高，_的叫声响度大。18、医生给孕妇做B超，说明声波能够传递；医生用超声波粉碎人体内的结石，说明声波能够传递。19、小轩的爸爸睡觉时的鼾（han）声通过传到小轩的耳中，影响了小轩的休息，这种声音属于，带上耳塞是在减少噪声。20、物理学中用振幅来描述物体的振动幅度，物体的振幅越大，产生声音的越大。大多数人能够听到声音的频率范围从20 Hz到 20000 Hz，人们把高于20000 Hz的声音叫做，低于 20 Hz 的声音叫。21、如右图所示，是人们利用来测量海洋的深度。22、在做真空是否传声的实验中，先让电铃发声并放入玻璃罩内，再，发现电铃的声音将逐渐，（填“变大”或“变小”），然后把空气文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7，会发现声音将逐渐，（填“变大”或“变小”），这个实验用到一种物理方法是。第二章 声现象第一节、声音的产生与传播1、产生：声音是由物体振动产生的，振动停止，发声也停止，但声音并没立即消失（因为原来发出的声音仍在继续传播）；2、传播：声以波的形式通过介质传播3、介质分类：固体、液体、气体。都可以传声真空不能传声4、声速声速与介质种类、介质温度有关 V 固V液V气空气中温度越高传播速度越快15空气，声速：340m/s 回声测距计算：s=vt/2 注：由声音物体一定振动，有振动不一定能听见声音5、声波遇到障碍物要发生反射的现象叫回声听见回声的条件：原声与回声之间的时间间隔在0.1s 以上或发声体距障碍物大于 17m。6、我们怎样听到声音人听到声音的两个途径：通过人耳：物体振动产生声波 介质骨膜振动 听小骨振动 听觉神经大脑骨传声：物体振动产生声波骨头听觉神经 大脑说明固体能够传声，且传音效果比空气好举例：贝多芬失聪后利用骨传声创作乐曲；咀嚼口香糖、饼干觉到的声音比周围人感觉到的更大双耳效应：声源到两耳距离不同，导致声音传入两耳的时刻、强弱、步调不同双耳效应是判断声源方位的重要基础，其他应用：双声道立体声第二节、声音的特性（超级超级重点）1、乐音三要素：音调：声音的高低称为音调，频率快则音调高，频率慢则音调低；（每秒振动次数称为频率，单位：赫兹，符号：Hz，人耳听觉频率可听范围 2020000Hz，低于 20Hz 为次声波，高于 20000Hz 为超声波）响度：声音强弱（大小）叫做响度，与振幅、距离有关（振动幅度的大小称作振幅）音色：与发声体材料、结构有关文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P72、乐音：从物理角度上讲，物体做有规则振动发出的声音；例：音调：小提琴改变琴弦松紧（定弦），改变音调吸管长度不同，吹气音调不同养蜂人区分蜜蜂是否采蜜暖水瓶灌水声音变化一玻璃杯先后倒入不同量的水，细棒轻敲，频率不同医生检查病人腹部积水女高音音调高于男低音响度：男低音响度大于女高音震耳欲聋音色：声音的音品，人耳能区分出不同乐器的声音、声纹锁的原理、只闻其声便知其人第三节、声的利用1、超声波超声波具有方向性好、穿透能力强、易获得较集中的声能的特点1）声能传播信息：举例回声定位（蝙蝠利用超声波夜飞、声呐测距、超声波检测物体）B超（是超声波）2）声能传播能量：举例，超声波清洗污垢、超声波治疗结石、声波熄灭烛焰、造成破坏、超声波除尘、超声波焊接第四节、噪声的危害和控制1、噪声来源：物理学角度：发声体做无规则振动环境保护角度：妨碍人们正常休息、学习、工作的声音噪声的等级：表示声音强弱的单位是分贝。符号dB 2、噪声强弱：听觉下限 0dB，理想安静环境 30-40dB，超过 50dB影响休息，超过 70dB影响学习工作，超过90dB影响听力，150dB失听力3、控制噪声的途径（重点）声源处减弱（例：消声器、无声手枪、禁止鸣笛等）传播过程中减弱（例：远离噪声源、隔音板、关闭门窗、设立屏障或植树等）人耳处减弱（例：耳塞、耳罩、防声头盔等）文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7文档编码:CV9Q1N10K5V4 HB4F2I3E2V8 ZJ10V10V9T10P7