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target="_blank"> (2021八上·臨沭期中) </a> 如果一等腰三角形的周長(zhǎng)為27，且兩邊的差為12，則這個(gè)等腰三角形的腰長(zhǎng)為（　?。? </h1> <div id="4j4o0dz" class="exam-s"> <span id="ob4o5kt" class="op-item"><span id="yplj4pt" class="op-item-nut">A . </span><span id="qosnumz" class="op-item-meat">13</span></span> <span id="shdovjk" class="op-item"><span id="stvkuqh" class="op-item-nut">B . </span><span id="utv49qh" class="op-item-meat">5</span></span> <span id="4bzuclq" class="op-item"><span id="9p4zfqn" class="op-item-nut">C . </span><span id="r4441bd" class="op-item-meat">5或13</span></span> <span id="zgr909n" class="op-item"><span id="mwpxbll" class="op-item-nut">D . </span><span id="b554db9" class="op-item-meat">1</span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="b9rug9l" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="vtub99d" class="g-sd2">  <div style="background:#fff;padding:20px 0;margin-bottom:20px;text-align:center;"> <img 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