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<div id="guwwial" 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="4i9rc1m" class="m-wrap g-cw cfx"> <div id="szta1ci" class="w fl"> <div id="z7wucvw" class="g-mn2"> <ul id="J_question_detail" > <li> <div id="8txdbdx" class="question-block"> <div id="oum412x" class="q-mc"> <h1 class="q-tit"> 1. 質(zhì)量為2000<span>kg</span>的小汽車以10<span>m</span><span>/s</span>的速度通過(guò)半徑為50<span>m</span>的拱形橋頂點(diǎn)時(shí)對(duì)路面的壓力為（g取10<span>m</span><span>/s<sup>2</sup></span>）（　?。? </h1> <div id="vq78sjv" class="exam-s"> <span id="7iekhew" class="op-item"><span id="5qctoxp" class="op-item-nut">A . </span><span id="jhu8moo" class="op-item-meat">2×10<sup>4</sup><span>N</span></span></span> <span id="iosbrz7" class="op-item"><span id="xjnoldx" class="op-item-nut">B . </span><span id="ul3x7vo" class="op-item-meat">2.4×10<sup>4</sup><span>N</span></span></span> <span id="oqlgtcp" class="op-item"><span id="krszmwg" class="op-item-nut">C . </span><span id="htm2vhi" class="op-item-meat">1.6×10<sup>4</sup><span>N</span></span></span> <span id="5kqixqr" class="op-item"><span id="2xzql35" class="op-item-nut">D . </span><span id="grlerky" class="op-item-meat">2.6×10<sup>4</sup><span>N</span></span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="ca9u693" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="bpbqmpq" class="g-sd2">  <div style="background:#fff;padding:20px 0;margin-bottom:20px;text-align:center;"> <img src="/question/paper-qrcode?id=1344965" 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="rmwdt0d" class="analyize-extend JV_question__papers"> <h3 class="extend-mt">使用過(guò)本題的試卷</h3> <ul class="extend-mc"> <li> <a 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