2019中考物理一轮复习02声真题演练.doc

上传人:cleanass300 文档编号:918682 上传时间:2019-03-02 格式:DOC 页数:2 大小:391.33KB
下载 相关 举报
2019中考物理一轮复习02声真题演练.doc_第1页
第1页 / 共2页
2019中考物理一轮复习02声真题演练.doc_第2页
第2页 / 共2页
亲,该文档总共2页,全部预览完了,如果喜欢就下载吧!
资源描述

1、1声中考真题演练1(2018菏泽中考)下列实验中,用来说明声音传播需要介质的是( )2(2014菏泽中考)关于声现象,下列说法正确的是 ( )A声音在不同介质中的传播速度相同B在真空中也可以传播声音C振动的物体一定会发出声音D一切发声物体都在振动3(2017菏泽中考)关于声现象,下列说法正确的是( )A声音在空气中传播比在水中传播得快B声音和光在空气中传播时,声音传播得较快C喇叭播放的歌曲都是乐音D声音是由物体的振动产生的4(2015菏泽中考)下列与声现象有关的说法中正确的是( )A一切发声的物体都在振动B公路旁安装“声障墙”是在声源处减弱噪声C声和电磁波都能传递信息,且都可以在真空中传播D声

2、音的传播速度一定是 340m/s5(2016菏泽中考)人工智能使得人们的生活越来越方便,华人青年王孟秋发明了一款功能强大的便携式家用“无人相机” ,相机内装有多种高科技传感器,底部装有镜头和声呐(发射超声,同时能接受超声2的装置),机身只有 240 克。你认为向下发射超声的“底部声呐”可能与下列相机的哪个功能有关( )A用手机控制相机B相机能自动悬浮停在合适高度拍摄C相机水平位置运动时遇到障碍物会自动避开D笑脸抓拍6(2018盐城中考)在公共场所“轻声”说话,在课堂上“大声”回答问题,这里的“轻声”和“大声”是指声音的( )A音调 B响度 C音色 D声速7(2018德州中考)如图为木制玩具青蛙刮鼓,用木棒在青蛙背上摩擦,就会发出类似青蛙的叫声,有时还能引起周围青蛙的附和共鸣。下列说法正确的是( )A青蛙刮鼓发出的声音是由木棒振动产生的B模拟青蛙的叫声是指音色相近C青蛙刮鼓发出的声音一定是噪声D能引起周围青蛙的附和共鸣说明声音能传递能量参考答案1C2.D3.D4.A5.B6.B7.B

展开阅读全文
相关资源
猜你喜欢
  • GOST 19438 19-1978 Low-power electronic tubes Measurement of microphone effect by method of shock excitation《小功率电子管 振荡噪声与振颤效果的测量方法》.pdf GOST 19438 19-1978 Low-power electronic tubes Measurement of microphone effect by method of shock excitation《小功率电子管 振荡噪声与振颤效果的测量方法》.pdf
  • GOST 19438 2-1974 Low-power electronic tubes Methods of measurement of direct interelectrode capacitances《小功率电子管 静态极间电容的测定方法》.pdf GOST 19438 2-1974 Low-power electronic tubes Methods of measurement of direct interelectrode capacitances《小功率电子管 静态极间电容的测定方法》.pdf
  • GOST 19438 20-1979 Low powered electronic tubes Method for measurement of the temperature of the bulb《小功率电子管 管温的测量方法》.pdf GOST 19438 20-1979 Low powered electronic tubes Method for measurement of the temperature of the bulb《小功率电子管 管温的测量方法》.pdf
  • GOST 19438 21-1979 Low-power electronic tubes and valves for output cascades of TV line scanninp Methods of measurement of electrice parametres and test for service time《行扫描块的输出级用小.pdf GOST 19438 21-1979 Low-power electronic tubes and valves for output cascades of TV line scanninp Methods of measurement of electrice parametres and test for service time《行扫描块的输出级用小.pdf
  • GOST 19438 3-1974 Low-power electronic tubes and valves Method of measurement of insulation resistance between electrodes and between electrodes and all other elements of tubes and.pdf GOST 19438 3-1974 Low-power electronic tubes and valves Method of measurement of insulation resistance between electrodes and between electrodes and all other elements of tubes and.pdf
  • GOST 19438 4-1974 Low-power electronic tubes Methods of measurement of current of control grids《连续耗散阳极功率在25W以内的收讯-放大与振荡管 控制栅极的电流测量方法》.pdf GOST 19438 4-1974 Low-power electronic tubes Methods of measurement of current of control grids《连续耗散阳极功率在25W以内的收讯-放大与振荡管 控制栅极的电流测量方法》.pdf
  • GOST 19438 6-1975 Low-power electronic tubes and valves Methods of measurement of ampleication factor《小功率电子管 放大系数测量方法》.pdf GOST 19438 6-1975 Low-power electronic tubes and valves Methods of measurement of ampleication factor《小功率电子管 放大系数测量方法》.pdf
  • GOST 19438 7-1975 Electron low power tubes Measuring method for steepuess of characteristic《小功率电子管 特性曲线斜率的测量方法》.pdf GOST 19438 7-1975 Electron low power tubes Measuring method for steepuess of characteristic《小功率电子管 特性曲线斜率的测量方法》.pdf
  • GOST 19438 8-1975 Low-power electronic tubes and valves Methods of measurement of current due to the cathode electron emission《小功率电子管 阴极电子发射电流的测量方法》.pdf GOST 19438 8-1975 Low-power electronic tubes and valves Methods of measurement of current due to the cathode electron emission《小功率电子管 阴极电子发射电流的测量方法》.pdf
  • 相关搜索

    当前位置:首页 > 考试资料 > 中学考试

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1