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alt="開(kāi)學(xué)季" class="banner"></a>   <div id="gwr18lkl3dc" class="news_mian"> <h1><span id="ycTitle"></span>開(kāi)挖深度超過(guò)(　)的基坑，必須在沿基坑邊設立防護欄桿且在危險處設置紅色警示燈，防護欄桿周?chē)鷳覓臁敖狗健薄爱斝膲嬄洹钡冉?、警告標志?/h1> <div id="gwr18lkl3dc" class="mark"> <div id="gwr18lkl3dc" class="lTxt"> <span id="gwr18lkl3dc" class="time">2021-08-25 17:38</span> <span id="gwr18lkl3dc" class="source">來(lái)源：<a href="http://m.zcjx68.com" title="建設工程教育網(wǎng)">建設工程教育網(wǎng)</a></span> </div> <a href="javascript:void(0);" target="_self" class="collection li-an"></a> <a href="javascript:void(0);" target="_self" class="print" onclick="javascript:window.print()">打印</a> <div id="gwr18lkl3dc" class="font_size">字體：<a href="javascript:void(0);" target="_self" class="big">大</a><a href="javascript:void(0);" target="_self" class="small">小</a></div> </div> </div>   <div id="gwr18lkl3dc" class="news_con"> <div id="gwr18lkl3dc" class="jxbox clearfix"> <p style="font-size: medium; white-space: normal;">　　開(kāi)挖深度超過(guò)(　)的基坑，必須在沿基坑邊設立防護欄桿且在危險處設置紅色警示燈，防護欄桿周?chē)鷳覓臁敖狗健薄爱斝膲嬄洹钡冉?、警告標志?/p><p style="font-size: medium; white-space: normal;">　　A.1m</p><p style="font-size: medium; white-space: normal;">　　B.2m</p><p style="font-size: medium; white-space: normal;">　　C.4m</p><p style="font-size: medium; white-space: normal;">　　D.5m</p><p style="font-size: medium; white-space: normal;">　　【答案】B</p><p style="font-size: medium; white-space: normal;">　　【解析】本題考查的是基坑施工作業(yè)要求。開(kāi)挖深度超過(guò)2m的，必須在沿基坑邊設立防護欄桿且在危險處設置紅色警示燈，防護欄桿周?chē)鷳覓臁敖狗健薄爱斝膲嬄洹钡冉?、警告標志?/p> <div style="text-align: right;" id="ycFoot"></div> </div> </div>   <div id="gwr18lkl3dc" class="share new-share clearfix"> <div id="gwr18lkl3dc" class="info-share-new fl"> <div id="gwr18lkl3dc" class="snltxt fl">分享到：</div> <div id="gwr18lkl3dc" class="fl" id="share-2020" data-sites="wechat, qzone, weibo, qq"></div> </div> <div id="gwr18lkl3dc" class="jc fr">責任編輯：辛靜</div> </div>   <a 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