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<div id="e3vgg9z" class="question-block"> <div id="m4ipzi4" class="q-mc"> <h1 class="q-tit"> 1. <a href="/paper/view-5244437.shtml" class="ques-origin a-pointer" target="_blank"> (2023八上·紅安期中) </a> 某中學運動會男子400米比賽時，發(fā)令員在起跑線后方某處，運動員在各自賽道的起點處等待發(fā)令，如圖所示。發(fā)令槍響同時有閃光，下列判斷正確的是（　　）<p><img width="261" height="168" src="http://tikupic.21cnjy.com/2023/12/28/5e/05/5e0539d85f3d14753bbbde5a3cdd496e_262x168.png" style="max-width:100%;"></p> </h1> <div id="zhugxzr" class="exam-s"> <span id="9rycuhy" class="op-item"><span id="wijelpf" class="op-item-nut">A . </span><span id="4fiibjn" class="op-item-meat">槍聲不是振動產生的</span></span> <span id="jd4tlfr" class="op-item"><span id="a5plfim" class="op-item-nut">B . </span><span id="lgvgnfc" class="op-item-meat">在第8賽道的運動員聽到的槍聲最晚</span></span> <span id="9hhanz9" class="op-item"><span id="lcxqt9s" class="op-item-nut">C . </span><span id="uprcy9l" class="op-item-meat">槍聲和閃光傳播都需要介質</span></span> <span id="w9hihq4" class="op-item"><span id="e4oclzl" class="op-item-nut">D . </span><span id="lxi9haq" class="op-item-meat">發(fā)令員戴耳塞是在聲源處減弱噪聲</span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="wnoyy9u" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="9cuaj4v" class="g-sd2">  <div style="background:#fff;padding:20px 0;margin-bottom:20px;text-align:center;"> <img src="/question/paper-qrcode?id=55492631" width="140px" height="140px" alt=""> <p style="text-align:center;margin-top: 10px">微信掃碼預覽、分享更方便</p> </div> <div id="tzczf4s" 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 href="/paper/view-5244437.shtml" target="_blank" title="湖北省黃岡市紅安縣2023-2024學年八年級上學期期中物理試題" class="ex-tit"> <b></b><span>湖北省黃岡市紅安縣2023-2024學年八年級上學期期中物理試題</span> </a> </li> </ul> </div>  <div id="xzzzhva" class="JV_question__subject"> <ul class="subjects-recomm"> <li> <a href="/merge?id=394" target="_blank"> <img 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