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class="top-login-item">登錄</a> <a class="top-register-item">注冊</a> </li> </ul> </div> </div> </div> <div id="m87neyh" class="crumbs g-cw"> <i class="iconw-fixed"></i> <span>當(dāng)前位置：</span>   <a href="/question?tree_type=category&xd=3&chid=6" class="pointer">高中物理</a> <span>/</span> <a href="javascript:;">單選題</a> </div> <div id="omx6lt2" class="m-wrap g-cw cfx"> <div id="hp2mu74" class="w fl"> <div id="hgo199g" class="g-mn2"> <ul id="J_question_detail" > <li> <div id="xkokrmw" class="question-block"> <div id="ibe77ap" class="q-mc"> <h1 class="q-tit"> 1. <a href="/paper/view-5382443.shtml" class="ques-origin a-pointer" target="_blank"> (2024高三上·湖南月考) </a> 在光滑水平地面上，三個完全相同的小球，通過兩根不可伸長、長度相同的輕質(zhì)細(xì)線連接，初始時三小球共線且均靜止，細(xì)線繃直，如圖甲所示?，F(xiàn)給小球3一垂直細(xì)線向右的瞬時沖量，則在小球1、2碰撞前（　?。?p style="text-align:justify;"><img src="http://tikupic.21cnjy.com/ct20241o/f1/5e/f15e82dc08aa7e5e27c37a828f112d94.png" width="191" height="182" style="max-width:100%;"></p> </h1> <div id="8pnkfoy" class="exam-s"> <span id="u5rx8iz" class="op-item"><span id="m77sdxq" class="op-item-nut">A . </span><span id="wlmvabk" class="op-item-meat">小球1、2組成的系統(tǒng)的動量守恒</span></span> <span id="8y3rjiu" class="op-item"><span id="jnstzkd" class="op-item-nut">B . </span><span id="fmmectv" class="op-item-meat">小球1、2組成的系統(tǒng)的機(jī)械能守恒</span></span> <span id="gew7oto" class="op-item"><span id="lpz4fgr" class="op-item-nut">C . </span><span id="ugyavwy" class="op-item-meat">兩根細(xì)線中的張力大小均不變</span></span> <span id="yupxjcv" class="op-item"><span id="vke2yxz" class="op-item-nut">D . </span><span id="nmiolez" class="op-item-meat">小球3的速度一直在減小</span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="czmsrcf" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="xcxg4o3" class="g-sd2">  <div style="background:#fff;padding:20px 0;margin-bottom:20px;text-align:center;"> <img src="/question/paper-qrcode?id=58801593" width="140px" 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