成考院校在线答案
- 2022-09-12 [单选] <p class="MsoNormal">12、<span style="font-family:宋体">铸铁水管冬天结冰时会因冰膨胀而被胀裂，而管内的冰却不会破坏，这是因为（</span><span lang="EN-US"> </span><span style="font-family:宋体">）。</span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span></p>
- 2022-09-12 [单选] <p class="MsoNormal">30、 <span style="font-family:Microsoft Yahei;">（</span><span>a</span><span style="font-family:Microsoft Yahei;">）、</span><span>(b)</span><span style="font-family:Microsoft Yahei;">两图代表平面汇交力系的两个力多边形，其中哪一个图代表平衡力系，哪一个图中的哪一个<span class="GramE">力代表</span>合力，有以下四种说法，正确的应是（</span><span><span> </span></span><span style="font-family:Microsoft Yahei;">）。<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191203/20191203170121_151.png" alt=""></span></p><p class="MsoNormal"> <span style="font-size:12.0pt;"> </span></p>
- 2022-09-12 [单选] <p class="MsoNormal">29、 <span style="font-family:Microsoft Yahei;">用积分法求图示简支梁挠曲线方程时，确定积分常数的条件有以下几组，其中</span> <span style="font-family:Microsoft Yahei;">（</span><span> </span><span style="font-family:Microsoft Yahei;">）是错误的。<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191128/20191128164230_455.png" alt=""><img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191203/20191203165732_397.png" alt=""></span> </p>
- 2022-09-12 [单选] <p class="MsoNormal">4、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">若某力在某轴上的投影绝对值等于该力的大小，则该力在另一任意共面正交轴上的投影为（</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> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> <o:p> </o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">35、<span style="font-family:宋体">在单元体上，可以认为（</span><span lang="EN-US"> </span><span style="font-family:宋体">）</span> <span style="font-family:宋体">。</span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span></p>
- 2022-09-12 [单选] <p class="MsoNormal">36、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">根据力的平移定理可知，可以把作用在刚体上点</span><span lang="EN-US">A</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman"; mso-hansi-font-family:"Times New Roman"">的力平行移到任一点</span><span lang="EN-US">B</span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">，但必须同时附加一个力偶。这个附加力偶的矩等于（</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> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> <o:p> </o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">16、 <span class="GramE"><span style="font-family:Microsoft Yahei;">等直杆</span></span><span style="font-family:Microsoft Yahei;">受力如图所示，其中在</span><span>BC</span><span style="font-family:Microsoft Yahei;">段内（</span><span><span> </span></span><span style="font-family:Microsoft Yahei;">）。<img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191203/20191203165738_119.png" alt=""></span></p><p class="MsoNormal"> <span style="font-size:12.0pt;"> </span></p>
- 2022-09-12 [单选] <p class="MsoNormal">18、<span style="font-family:宋体">任意图形的面积为</span><i><span lang="EN-US">A</span></i><i><span style="font-family:宋体">，</span></i><span lang="EN-US">x<sub>0</sub></span><span style="font-family:宋体">轴通过形心</span><i><span lang="EN-US">C</span></i><i><span style="font-family:宋体">，</span> </i><span lang="EN-US">x<sub>1</sub><i> </i></span><span style="font-family:宋体">轴和</span><i><span lang="EN-US">x<sub>0</sub></span></i><span style="font-family:宋体">轴平行，并相距</span><i><span lang="EN-US">a</span></i><span style="font-family:宋体">，已知图形对</span><span lang="EN-US">x<sub>1</sub> </span><span style="font-family:宋体">轴的惯性矩是</span><span lang="EN-US">I<sub>1</sub></span><span style="font-family:宋体">，则对</span><i><span lang="EN-US">x<sub>0 </sub></span></i><span style="font-family:宋体">轴的惯性矩为（</span><span lang="EN-US"> </span><span style="font-family:宋体">）。</span></p> <p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-US"><img width="191" height="147" id="图片 4" src="http://wljy.whut.edu.cn//uploadfiles/word/gclx001.files/image004.png"></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span></p>
- 2022-09-12 [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"">一圆截面轴向拉压杆，若其直径增加一倍，则抗拉</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"><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> <span style="font-family:Microsoft Yahei;mso-ascii-font-family: "Times New Roman";mso-hansi-font-family:"Times New Roman"">。</span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> <o:p> </o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">38、<span style="font-family:宋体">在下列说法中，（</span><span lang="EN-US"> </span><span style="font-family:宋体">）是错误的。</span></p> <p class="MsoNormal"><span lang="EN-US" style="font-size:12.0pt"> </span></p>