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<h1 class="q-tit"> 1. <a href="/paper/view-5184944.shtml" class="ques-origin a-pointer" target="_blank"> (2023高一下·青龍期末) </a> 在星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EP%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">和星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EQ%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">的表面，以相同的初速度<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmsub%3E%3Cmrow%3E%3Cmi%3Ev%3C%2Fmi%3E%3C%2Fmrow%3E%3Cmrow%3E%3Cmn%3E0%3C%2Fmn%3E%3C%2Fmrow%3E%3C%2Fmsub%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">豎直上拋一小球，小球在空中運(yùn)動(dòng)時(shí)的<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3Ev%3C%2Fmi%3E%3Cmo%3E%E2%88%92%3C%2Fmo%3E%3Cmi%3Et%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">圖像分別如圖所示。假設(shè)兩星球均為質(zhì)量均勻分布的球體，星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EP%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">的半徑是星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EQ%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">半徑的<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">倍，下列說法正確的是（　?。?p><img width="198" height="145" src="http://tikupic.21cnjy.com/2023/07/24/07/97/07972ffd20ecaa22df1418a9ba79ef3e_215x158.png" style="max-width:100%;"></p> </h1> <div id="33rltfq" class="exam-s"> <span id="0f6hk2m" class="op-item"><span id="flua6b9" class="op-item-nut">A . </span><span id="4f4hpal" class="op-item-meat">星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EP%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">和星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EQ%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">的質(zhì)量之比為<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E3%3C%2Fmn%3E%3Cmn%3E%EF%BC%9A%3C%2Fmn%3E%3Cmn%3E1%3C%2Fmn%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></span></span> <span id="taqoj1l" class="op-item"><span id="3ldba85" class="op-item-nut">B . </span><span id="651j5hx" class="op-item-meat">星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3EP%3C%2Fmn%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">和星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EQ%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">的密度之比為<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E1%3C%2Fmn%3E%3Cmn%3E%EF%BC%9A%3C%2Fmn%3E%3Cmn%3E1%3C%2Fmn%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></span></span> <span id="cac5lhr" class="op-item"><span id="jalxhum" class="op-item-nut">C . </span><span id="yxq5amn" class="op-item-meat">星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3EP%3C%2Fmn%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">和星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EQ%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">的第一宇宙速度之比為<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E1%3C%2Fmn%3E%3Cmn%3E%EF%BC%9A%3C%2Fmn%3E%3Cmn%3E1%3C%2Fmn%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></span></span> <span id="c16ofx6" class="op-item"><span id="6knelmo" class="op-item-nut">D . </span><span id="eeteu0s" class="op-item-meat">星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3EP%3C%2Fmn%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">和星球<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmi%3EQ%3C%2Fmi%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;">的近地衛(wèi)星周期之比為<img class="mathml" src="http://math.21cnjy.com/MathMLToImage?mml=%3Cmath+xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F1998%2FMath%2FMathML%22%3E%3Cmn%3E1%3C%2Fmn%3E%3Cmn%3E%EF%BC%9A%3C%2Fmn%3E%3Cmn%3E3%3C%2Fmn%3E%3C%2Fmath%3E" style="max-width:100%;vertical-align: middle;"></span></span> </div> </div> </div> </li> </ul> <div style="height:20px;background-color: #fff;margin-top:1px"></div>  <div class="trli7u1" id="J_ConnectQuestionsdBox"> </div> </div> </div> <div id="pdqryit" class="g-sd2">  <div style="background:#fff;padding:20px 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