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class="pointer">初中物理</a> <span>/</span> <a href="javascript:;">多選題</a> </div> <div id="ucpd9j9" class="m-wrap g-cw cfx"> <div id="olyqz5j" class="w fl"> <div id="jbiwef4" class="g-mn2"> <ul id="J_question_detail" > <li> <div id="nf4rgic" class="question-block"> <div id="hgpfuey" class="q-mc"> <h1 class="q-tit"> 1. <a href="/paper/view-5320714.shtml" class="ques-origin a-pointer" target="_blank"> (2024七下·豐城期中) </a> 如圖為某聲速測量儀器的實(shí)驗(yàn)裝置圖，甲、乙是聲信號采集器，銅鈴到甲、乙的距離s<sub>1</sub>=20cm，s<sub>2</sub>=80cm；敲打銅鈴后，聲音被甲、乙接收，液晶顯示屏?xí)@示甲、乙接收到聲信號的時(shí)間差，單位為ms（<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmtext%3E1%3C%2Fmtext%3E%3Cmtext%3Em%3C%2Fmtext%3E%3Cmtext%3Es%3C%2Fmtext%3E%3Cmo%3E%3D%3C%2Fmo%3E%3Cmn%3E1%3C%2Fmn%3E%3Cmsup%3E%3Cmrow%3E%3Cmtext%3E0%3C%2Fmtext%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmtext%3E-%3C%2Fmtext%3E%3Cmtext%3E3%3C%2Fmtext%3E%3C%2Fmrow%3E%3C%2Fmsup%3E%3Cmtext%3Es%3C%2Fmtext%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">），下列說法正確的是（　?。?p><img width="312" height="117" src="http://tikupic.21cnjy.com/2024/06/12/b8/0c/b80cdfebd0e925f0c6e276defffa28a5_357x135.png" style="max-width:100%;"></p> </h1> <div id="lo4obph" class="exam-s"> <span id="fxs1och" class="op-item"><span id="pfwktty" class="op-item-nut">A . </span><span id="p96xqcx" class="op-item-meat">敲打銅鈴，液晶顯示屏上的示數(shù)為1.765，此時(shí)測得聲速約為<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E3%3C%2Fmn%3E%3Cmn%3E4%3C%2Fmn%3E%3Cmn%3E0%3C%2Fmn%3E%3Cmtext%3Em%3C%2Fmtext%3E%3Cmtext%3E%2F%3C%2Fmtext%3E%3Cmtext%3Es%3C%2Fmtext%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></span></span> <span id="eqjaief" class="op-item"><span id="jbsf6g4" class="op-item-nut">B . </span><span id="rwjekv4" class="op-item-meat">已知溫度越高，聲速越大：當(dāng)加熱銅鈴與乙之間的空氣后敲打銅鈴，液晶顯示屏的示數(shù)將變大</span></span> <span id="bjpt4vu" class="op-item"><span id="av9flbc" class="op-item-nut">C . </span><span id="gcpzxnn" class="op-item-meat">若將銅鈴放在甲、乙連線的中點(diǎn)，敲打銅鈴，液晶顯示屏的示數(shù)為0</span></span> <span id="telz6oh" class="op-item"><span id="sjwevlu" class="op-item-nut">D . </span><span id="ami9t12" class="op-item-meat">若將銅鈴、甲和乙從左向右依次撰放在同一條直線上，甲、乙位置固定不動(dòng)，移動(dòng)銅鈴，銅鈴離甲越遠(yuǎn)時(shí)敲打銅鈴，液晶顯示屏的示數(shù)越大</span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="6pwjeut" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="jr6ul6j" class="g-sd2">  <div style="background:#fff;padding:20px 0;margin-bottom:20px;text-align:center;"> <img src="/question/paper-qrcode?id=57173763" width="140px" height="140px" alt=""> <p style="text-align:center;margin-top: 10px">微信掃碼預(yù)覽、分享更方便</p> </div> <div id="llx9a4o" class="analyize-extend JV_question__papers"> <h3 class="extend-mt">使用過本題的試卷</h3> <ul class="extend-mc"> <li> <a 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