成考院校在线答案
- 2023-02-12 [单选] <p class="MsoNormal">29、<span style="font-family:宋体">曲柄</span><i><span lang="EN-US">OA</span></i><span style="font-family:宋体">以匀角速度转动，当系统运动到下图所示位置</span><span lang="EN-US">(<i>OA</i>//<i>O</i><sub>1</sub><i>B</i></span><span style="font-family:宋体">，</span><i><span lang="EN-US">AB</span></i><span style="font-family:宋体">⊥</span><i><span lang="EN-US">OA</span></i><span lang="EN-US">)</span><span style="font-family:宋体">时，则有</span><i><span lang="EN-US">v<sub>A</sub></span></i><u><span lang="EN-US"> </span></u><i><span lang="EN-US">v<sub>B</sub></span></i><span style="font-family:宋体">，</span><b><i><span lang="EN-US">a</span></i></b><i><sub><span lang="EN-US">A</span></sub></i><u><span lang="EN-US"> </span></u><b><i><span lang="EN-US">a</span></i></b><i><sub><span lang="EN-US">B</span></sub></i><span style="font-family:宋体">，</span><i><span lang="EN-US" style="font-family:Symbol">w</span><sub><span lang="EN-US">AB</span></sub></i><u><span lang="EN-US"> </span></u><span lang="EN-US">0</span><span style="font-family:宋体">，</span><i><span lang="EN-US" style="font-family:Symbol">a</span><sub><span lang="EN-US">AB</span></sub></i><u><span lang="EN-US"> </span></u><span lang="EN-US">0</span><span style="font-family:宋体">。若记</span><span style="font-family:宋体">①等于，②不等，则横线上正确的答案是（<span lang="EN-US"> </span>）</span></p> <p class="MsoNormal"><span lang="EN-US"><img width="143" height="119" id="图片 15" src="http://wljy.whut.edu.cn//uploadfiles/word/lllx001.files/image011.jpg"></span></p>
- 2023-02-12 [单选] <p class="MsoNormal">31、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">动力学基本方程只适用于（</span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">）。</span></p>
- 2023-02-12 [单选] <p class="MsoNormal">30、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">在平衡问题中，若未知数的数量（</span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">）所能建立的独立平衡方程的数量，称为静定问题。</span></p>
- 2023-02-12 [单选] <p class="MsoNormal">33、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">在点的合成运动问题中，当牵连运动为定轴转动时（</span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">）。</span></p>
- 2023-02-12 [单选] <p class="MsoNormal">40、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">（</span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">）物体的重心与形心重合。</span></p>
- 2023-02-12 [单选] <p class="MsoNormal">35、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">图示力</span><span lang="EN-US">F<sub>1</sub></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">、</span><span lang="EN-US">F<sub>2</sub></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">、</span><span lang="EN-US">F<sub>3</sub></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">和</span><span lang="EN-US">F<sub>4</sub></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">分别在坐标轴</span><span lang="EN-US">X</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">上的投影的计算式为（）。</span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> <v:shape id="_x0000_i1029" type="#_x0000_t75" style="width:153.6pt;height:90.6pt"> <v:imagedata src="LLLXDX.files/image005.png" o:title=""></v:imagedata> </v:shape></span></p>
- 2023-02-12 [单选] <p class="MsoNormal">19、 <span style="font-family:Microsoft Yahei;">图示</span><span>(a</span><span style="font-family:Microsoft Yahei;">）</span><span>(b</span><span style="font-family:Microsoft Yahei;">）</span><span>(c</span><span style="font-family:Microsoft Yahei;">）三种荷载作用下，梁</span><span>AB</span><span style="font-family:Microsoft Yahei;">的支座反力为（</span><span><span> </span></span><span style="font-family:Microsoft Yahei;">）<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191120/20191120110227_464.png" alt=""></span></p><p class="MsoNormal"> <span> </span></p>
- 2023-02-12 [单选] <p class="MsoNormal">38、 <span style="font-family:Microsoft Yahei;">四根杆件用铰链连接如图</span><span>6</span><span style="font-family:Microsoft Yahei;">所示，在水平杆</span><span>AB</span><span style="font-family:Microsoft Yahei;">上作用有一力偶矩为</span><i><span>M</span></i><span style="font-family:Microsoft Yahei;">的力偶，不计构件自重，则系统平衡时，铅垂杆</span><span>AC</span><span style="font-family:Microsoft Yahei;">的内力</span><i><span>F</span></i><span>=</span><span style="font-family:Microsoft Yahei;">（</span><span><span> </span></span><span style="font-family:Microsoft Yahei;">）</span><i> </i><span style="font-family:Microsoft Yahei;">（拉力为正）。<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191120/20191120101422_898.png" alt=""></span></p><p class="MsoNormal"> <span> </span></p>
- 2023-02-12 [单选] <p class="MsoNormal">35、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">力是（</span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">）</span></p>
- 2023-02-12 [单选] <p class="MsoNormal">39、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">研究点的平面曲线运动，不是通常采用的方法（</span><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">）</span></p>