[err:数据源标签'PE.DataSource id="cone" datasource="资料_内容页" itemId="115032" xslt="true" wu="0"'返回数据错,原因:“ ”是意外的标记。标记应为“=”。 行 101,位置 11。,源码:1150323 <meta http-equiv="refresh" content="0;url=/Item/115032.aspx?wu=1" /> 2162人教版八年级物理下学期课节知识点突破与课时作业:第10.3节 物体的浮沉条件及应用(解析版和原卷版)260.50KB260.50Bdocczwlzx吴江czwlzx/UploadFiles/UserPic/UserAvatars/15219_150_150.jpg <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?id=115032"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=dayhits&id=115032"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=weekhits&id=115032"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetHits.aspx?hitstype=monthhits&id=115032"></script> <script language="JavaScript" type="text/JavaScript" src="/Common/GetBrowseTimes.aspx?id=115032"></script> <img src="/images/star5.jpg" /> 吴江1人教版八年级物理下学期课节知识点突破与课时作业,物体的浮沉条件及应用2019年04月28日/UploadFiles/nopic.gif 一、学习目标 1.知道物体的浮沉条件。 2.知道浮力的应用。 3.通过观察、分析、了解轮船是怎样浮在一、学习目标 1.知道物体的浮沉条件。 2.知道浮力的应用。 3.通过观察、分析、了解轮船是怎样浮在水面的。 【预习提示】 1.浮沉条件。  2.潜水艇。  3.飞艇(飞船。) 4.密度计。 学习的重点是知道物体的浮沉条件。 学习的难点是物体的浮沉条件的应用。 二、知识点解读 知识点一: 物体的浮沉条件 1.物体上浮、下沉是运动过程,此时物体受非平衡力作用。下沉的结果是沉到液体底部,上浮的结果是浮出液面,最后漂浮在液面。如表:   浮力与物重的关系 液体密度与物体密度 物体运动状 【内容简介】一、学习目标 1.知道物体的浮沉条件。 2.知道浮力的应用。 3.通过观察、分析、了解轮船是怎样浮在水面的。 【预习提示】 1.浮沉条件。  2.潜水艇。  3.飞艇(飞船。) 4.密度计。 学习的重点是知道物体的浮沉条件。 学习的难点是物体的浮沉条件的应用。 二、知识点解读 知识点一: 物体的浮沉条件 1.物体上浮、下沉是运动过程,此时物体受非平衡力作用。下沉的结果是沉到液体底部,上浮的结果是浮出液面,最后漂浮在液面。如表:   浮力与物重的关系 液体密度与物体密度 物体运动状态   ρ 液>ρ物 物体上浮   ρ 液<ρ物 物体下沉   ρ 液=ρ物 物体悬浮在液体中任何深度处   2.漂浮与悬浮的共同点都是浮力等于重力,在平衡力的作用下静止不动。但漂浮是物体在液面的平衡状态,物体的一部分浸入液体中。悬浮是物体浸没在液体内部的平衡状态,整个物体浸没在液体中。如表:     物体所处状态 浮力与物重的关系 液体密度与物体密度的关系   F浮=G物 ρ 液>ρ物   F浮=G物 ρ 液 = ρ 物   F浮一、学习目标 1.知道物体的浮沉条件。 2.知道浮力的应用。 3.通过观察、分析、了解轮船是怎样浮在水面的。 【预习提示】 1.浮沉条件。&#160; 2. <p><em>所属专辑:</em> <a href='/Special_138/Index.aspx' target='_blank'> 人教版八年级物理下学期课节知识点突破与课时作业(解析版和原卷版) </a> </p> 下载地址1|sj/2019/4/201942816426.doc$$$下载地址2|sj/2019/4/201942816431.doc<p align="left" style="text-align: left; line-height: 150%">一、学习目标</p> <p align="left" style="text-align: left; line-height: 150%">1.知道物体的浮沉条件。</p> <p align="left" style="text-align: left; line-height: 150%">2.知道浮力的应用。</p> <p style="line-height: 150%">3.通过观察、分析、了解轮船是怎样浮在水面的。</p> <p style="line-height: 150%">【<strong>预习提示</strong>】</p> <p style="line-height: 150%">1.浮沉条件。  2.潜水艇。  3.飞艇(飞船。) 4.密度计。</p> <p align="left" style="text-align: left; line-height: 150%">学习的重点是知道物体的浮沉条件。</p> <p align="left" style="text-align: left; line-height: 150%">学习的难点是物体的浮沉条件的应用。</p> <p align="left" style="text-align: left; line-height: 150%">二、知识点解读</p> <p style="line-height: 150%"> <strong>知识点一:</strong> <strong>物体的浮沉条件</strong> </p> <p style="line-height: 150%">1.物体上浮、下沉是运动过程,此时物体受非平衡力作用。下沉的结果是沉到液体底部,上浮的结果是浮出液面,最后漂浮在液面。如表:</p> <p> </p> <table align="center" border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse"> <tbody> <tr style="height: 27px"> <td style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-bottom: 0cm; padding-left: 0cm; width: 148px; padding-right: 0cm; height: 27px; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 0cm"> <p align="center" style="text-align: center; line-height: 150%">浮力与物重的关系</p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 144px; padding-right: 0cm; height: 27px; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">液体密度与物体密度</p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 216px; padding-right: 0cm; height: 27px; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">物体运动状态</p> </td> </tr> <tr style="height: 27px"> <td style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-bottom: 0cm; padding-left: 0cm; width: 148px; padding-right: 0cm; height: 27px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p align="center" style="text-align: center; line-height: 150%"> </p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 144px; padding-right: 0cm; height: 27px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%"> <span style="letter-spacing: -1.5pt">ρ</span> <sub>液</sub>&gt;<span style="letter-spacing: -1.5pt">ρ</span><sub>物</sub></p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 216px; padding-right: 0cm; height: 27px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">物体上浮</p> </td> </tr> <tr style="height: 28px"> <td style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-bottom: 0cm; padding-left: 0cm; width: 148px; padding-right: 0cm; height: 28px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p align="center" style="text-align: center; line-height: 150%"> </p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 144px; padding-right: 0cm; height: 28px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%"> <span style="letter-spacing: -1.5pt">ρ</span> <sub>液</sub>&lt;<span style="letter-spacing: -1.5pt">ρ</span><sub>物</sub></p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 216px; padding-right: 0cm; height: 28px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">物体下沉</p> </td> </tr> <tr style="height: 31px"> <td style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-bottom: 0cm; padding-left: 0cm; width: 148px; padding-right: 0cm; height: 31px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p align="center" style="text-align: center; line-height: 150%"> </p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 144px; padding-right: 0cm; height: 31px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%"> <span style="letter-spacing: -1.5pt">ρ</span> <sub>液</sub>=<span style="letter-spacing: -1.5pt">ρ</span><sub>物</sub></p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 216px; padding-right: 0cm; height: 31px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">物体悬浮在液体中任何深度处</p> </td> </tr> </tbody> </table> <div style="clear: both"> </div> <p style="line-height: 150%">2.漂浮与悬浮的共同点都是浮力等于重力,在平衡力的作用下静止不动。但漂浮是物体在液面的平衡状态,物体的一部分浸入液体中。悬浮是物体浸没在液体内部的平衡状态,整个物体浸没在液体中。如表:</p> <p style="line-height: 150%"> </p> <p> </p> <table align="center" border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse"> <tbody> <tr style="height: 24px"> <td style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-bottom: 0cm; padding-left: 0cm; width: 123px; padding-right: 0cm; height: 24px; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">物体所处状态</p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 143px; padding-right: 0cm; height: 24px; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">浮力与物重的关系</p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 209px; padding-right: 0cm; height: 24px; border-top: windowtext 1pt solid; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">液体密度与物体密度的关系</p> </td> </tr> <tr style="height: 28px"> <td style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-bottom: 0cm; padding-left: 0cm; width: 123px; padding-right: 0cm; height: 28px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p align="center" style="text-align: center; line-height: 150%"> </p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 143px; padding-right: 0cm; height: 28px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">F<sub>浮</sub>=G<sub>物</sub></p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 209px; padding-right: 0cm; height: 28px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%"> <span style="letter-spacing: -1.5pt">ρ</span> <sub>液</sub>&gt;<span style="letter-spacing: -1.5pt">ρ</span><sub>物</sub></p> </td> </tr> <tr style="height: 29px"> <td style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-bottom: 0cm; padding-left: 0cm; width: 123px; padding-right: 0cm; height: 29px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p align="center" style="text-align: center; line-height: 150%"> </p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 143px; padding-right: 0cm; height: 29px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">F<sub>浮</sub>=G<sub>物</sub></p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 209px; padding-right: 0cm; height: 29px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%"> <span style="letter-spacing: -1.5pt">ρ</span> <sub>液</sub> <em>=</em> <span style="letter-spacing: -1.5pt">ρ</span> <sub>物</sub> </p> </td> </tr> <tr style="height: 33px"> <td style="border-bottom: windowtext 1pt solid; border-left: windowtext 1pt solid; padding-bottom: 0cm; padding-left: 0cm; width: 123px; padding-right: 0cm; height: 33px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p align="center" style="text-align: center; line-height: 150%"> </p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 143px; padding-right: 0cm; height: 33px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%">F<sub>浮</sub>&lt;G<sub>物</sub></p> </td> <td style="border-bottom: windowtext 1pt solid; border-left: #d4d0c8; padding-bottom: 0cm; padding-left: 0cm; width: 209px; padding-right: 0cm; height: 33px; border-top: #d4d0c8; border-right: windowtext 1pt solid; padding-top: 0cm"> <p style="text-justify: inter-ideograph; text-align: justify; line-height: 150%"> <span style="letter-spacing: -1.5pt">ρ</span> <sub>液</sub>&lt;<span style="letter-spacing: -1.5pt">ρ</span><sub>物</sub></p> </td> </tr> </tbody> </table> <div style="clear: both"> </div> <p style="line-height: 150%">(3)物体下表面与容器底紧密接触,沉底:F<sub>浮</sub>=0N</p> <p style="line-height: 150%"> <strong>知识点二:</strong> <strong>物体的浮沉条件的应用</strong> </p> <ol> <li value="NaN">轮船:</li> </ol> <p style="line-height: 150%">①原理:把密度大于水的钢铁制成空心的轮船,使它排开水的体积增大,从而来增大它所受的浮力,故轮船能漂浮在水面上。</p> <p style="line-height: 150%">②排水量:轮船满载时排开的水的质量。</p> <ol> <li value="NaN">潜水艇:</li> </ol> <p style="line-height: 150%">原理:潜水艇体积一定,靠水舱充水、排水来改变重力,使重力小于、大于或等于浮力来实现上浮、下潜或悬浮的。</p> <ol> <li value="NaN">气球和气艇:</li> </ol> <p style="line-height: 150%">原理:气球和飞艇体内充有密度小于空气的气体(氢气、氨气、热空气)。</p> <p align="left" style="text-align: left; line-height: 150%">三、深化理解知识点的例题及其解析</p> <p style="line-height: 150%">【例题1】小关与同学们去游觉桂林两江四湖,登上游船后,船会下沉一些,那么(  )</p> <p style="line-height: 150%">A.船的重力将减小   B.水对船的浮力将减小</p> <p style="line-height: 150%">C.水对船的浮力将增大   D.水对船的浮力将保持不变</p> <p style="line-height: 150%">答案:C</p> <p style="line-height: 150%"> </p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle">【例题2】如图所示,一段粗细、质量均匀的蜡块,重为G<sub>1</sub>,长为L,与一重为G<sub>2</sub>的铁块通过轻质细绳相连,整立漂浮在水面上,露出水面的长度为L<sub>0</sub>,则蜡块和铁块所受水的浮力F<sub>浮</sub>=<u>     </u>,若多次截掉蜡块露出水面的部分,直到蜡块上表面与水面恰好相平,此时蜡块在水中的长度L<sub>1</sub>≈<u>        </u>。(结果用G<sub>1</sub>、G<sub>2</sub>、ρ<sub>水</sub>、ρ<sub>蜡</sub>、L、L<sub>0</sub>来表示)</p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle"> </p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle">答案:G<sub>1</sub>+G<sub>2</sub>;L﹣ <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image006.gif" />L<sub>0</sub>。</p> <p style="line-height: 150%"> <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image007.png" /> </p> <p style="line-height: 150%">(1)蜡块与铁块通过轻质细绳相连,整立漂浮在水面上时,根据漂浮条件可知:F<sub>浮</sub>=G<sub>1</sub>+G<sub>2</sub>;</p> <p style="line-height: 150%">(2)当蜡块漂浮时,根据阿基米德原理可得:</p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle">V<sub>排</sub>= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image009.gif" />= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image010.gif" />;</p> <p style="line-height: 150%">根据G=mg=ρVg可得蜡块体积:</p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle">V<sub>1</sub>= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image011.gif" />,</p> <p style="line-height: 150%">由于露出水面的长度为L <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image001.png" /><sub>0</sub>,则蜡块漂浮时浸在水里的体积为:</p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle">V<sub>蜡浸</sub>= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image013.gif" />V<sub>1</sub>= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image013.gif" />× <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image011.gif" />= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image014.gif" />,</p> <p style="line-height: 150%">铁块的体积:</p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle">V<sub>2</sub>=V<sub>排</sub>﹣V<sub>蜡浸</sub>= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image010.gif" />﹣ <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image014.gif" />;</p> <p style="line-height: 150%">当蜡块上表面与水面恰好相平,即悬浮时,</p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle">V<sub>排</sub>′= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image015.gif" />V<sub>1</sub>+V<sub>2</sub>)= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image015.gif" />× <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image011.gif" />+ <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image010.gif" />﹣ <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image014.gif" />;</p> <p style="line-height: 150%">则:F<sub>浮</sub>′=G<sub>蜡剩</sub>+G<sub>2</sub>,</p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle">即:ρ<sub>水</sub>g( <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image015.gif" />× <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image011.gif" />+ <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image010.gif" />﹣ <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image014.gif" />)= <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image015.gif" />G<sub>1</sub>+G<sub>2</sub>,</p> <p align="left" style="text-align: left; line-height: 150%; vertical-align: middle">所以,L<sub>1</sub>=L﹣ <img src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image006.gif" />L<sub>0</sub>。</p> <p align="left" style="text-align: left; line-height: 150%">四、本节课的课时作业(含答案与解析)</p>人教版不限试题试卷专供vip会员doc <img src="/images/nopic.gif" alt="%e4%ba%ba%e6%95%99%e7%89%88%e5%85%ab%e5%b9%b4%e7%ba%a7%e7%89%a9%e7%90%86%e4%b8%8b%e5%ad%a6%e6%9c%9f%e8%af%be%e8%8a%82%e7%9f%a5%e8%af%86%e7%82%b9%e7%aa%81%e7%a0%b4%e4%b8%8e%e8%af%be%e6%97%b6%e4%bd%9c%e4%b8%9a%ef%bc%9a%e7%ac%ac10.3%e8%8a%82+%e7%89%a9%e4%bd%93%e7%9a%84%e6%b5%ae%e6%b2%89%e6%9d%a1%e4%bb%b6%e5%8f%8a%e5%ba%94%e7%94%a8%ef%bc%88%e8%a7%a3%e6%9e%90%e7%89%88%e5%92%8c%e5%8e%9f%e5%8d%b7%e7%89%88%ef%bc%89" border="0" /> /UploadFiles/sj/2019/4/201942816426.doc$$$下载地址2|sj/2019/4/201942816431.doc <script type="text/javascript" src="/cuplayer4/js/swfobject.js"></script> <div class="video" id="CuPlayer"><b><img src="/cuplayer4/images/loading.gif" /> 网页视频播放器加载中,请稍后...<a href="http://www.cuplayer.com/cuplayer" target="_blank">点此升级>></a></b></div> <script type="text/javascript"> var so = new SWFObject("/cuplayer4/player.swf","myCuPlayer","940","465","9","#000000"); 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