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src="http://tikupic.21cnjy.com/2023/10/17/82/d1/82d19e8dcaebe6d12798d85ccf74d5f4_154x122.png" style="max-width:100%;"></p> </h1> <div id="jlptlpt" class="exam-s"> <span id="lhhjfvn" class="op-item"><span id="pjhx1tp" class="op-item-nut">A . </span><span id="zh3tlnt" class="op-item-meat">從A至B，q先做勻加速運(yùn)動(dòng)，后做勻減速運(yùn)動(dòng)</span></span> <span id="rd3jlvb" class="op-item"><span id="xtl3xdt" class="op-item-nut">B . </span><span id="j5blpzx" class="op-item-meat">在B點(diǎn)受到的庫(kù)侖力大小是mgsinθ</span></span> <span id="jlx399r" class="op-item"><span id="fpfpd97" class="op-item-nut">C . </span><span id="j1rxvlr" class="op-item-meat">電荷量為q的帶正電的小球速度最大位置在C點(diǎn)下方</span></span> <span id="jdvjrpv" class="op-item"><span id="tdnvpvz" class="op-item-nut">D . </span><span id="5jhrtx5" class="op-item-meat">在從A至C和從C至B的過程中，前一過程q電勢(shì)能的增加量較大</span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="flh1xhr" 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