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A中的杠桿和物體處于靜止狀態(tài)，B、C、D中的物體被勻速吊起，所有物體重力均為G，不計動滑輪重力、繩重和一切摩擦，則所用拉力F最小的是（　?。? </h1> <div id="zrx7rl3" class="exam-s"> <span id="j3fznth" class="op-item"><span id="pbj3lv3" class="op-item-nut">A . </span><span id="7jxffr3" class="op-item-meat"><img width="149" height="123" src="http://tikupic.21cnjy.com/2021/12/07/72/a7/72a76630a2bfcfc61ec82d0b56d30ce7.png" style="max-width:100%;"></span></span> <span id="p9ph3xf" class="op-item"><span id="bxnthbn" class="op-item-nut">B . </span><span id="jrzjrlz" class="op-item-meat"><img width="65" height="94" src="http://tikupic.21cnjy.com/2021/12/07/91/70/9170ed92506b415d616fd4d851fadef7.png" style="max-width:100%;"></span></span> <span id="jff7tfb" class="op-item"><span id="bpn1x3j" class="op-item-nut">C . </span><span id="hxtvzb1" class="op-item-meat"><img width="78" height="198" src="http://tikupic.21cnjy.com/2021/12/07/70/5b/705ba96449e9101befe1ed6d3cf4ff03.png" style="max-width:100%;"></span></span> <span id="fdzbxld" class="op-item"><span id="b3rznnj" class="op-item-nut">D . </span><span id="3jdldfv" class="op-item-meat"><img width="70" height="202" src="http://tikupic.21cnjy.com/2021/12/07/94/4c/944c3fe668ee3b0b29e1be9a14741d8c.png" style="max-width:100%;"></span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="jzfrdzz" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="xvh5hfx" class="g-sd2">  <div style="background:#fff;padding:20px 0;margin-bottom:20px;text-align:center;"> <img src="/question/paper-qrcode?id=51105188" 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="jphrtpv" 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-5180175.shtml" target="_blank" title="山東省棗莊市嶧城區(qū)2021-2022學年八年級（下）物理期末試卷" class="ex-tit"> <b></b><span>山東省棗莊市嶧城區(qū)2021-2022學年八年級（下）物理期末試卷</span> </a> </li> <li> <a 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