成考院校在线答案
- 2024-03-05 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan;">24、<span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">在已知荷载作用下，能选择三铰拱的轴线，使得拱的所有横截面上的</span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">轴力</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">为零。该拱的轴线就称为三铰拱的合理拱轴线</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;"> <o:p></o:p></span></p>
- 2024-03-05 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan;">38、<span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">固定铰支座</span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">处的约束反力方向向上</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;"> <o:p></o:p></span></p>
- 2024-03-05 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan;">29、<span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">对于平面结构，梁上某一截面处的内力有轴力、剪力和弯矩</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;"> <o:p></o:p></span></p>
- 2024-03-05 [判断] <p class="MsoNormal">39、<span style="mso-spacerun:'yes';font-family:Microsoft Yahei;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;font-size:10.5000pt;mso-font-kerning:1.0000pt;">超静定结构在荷载作用下，其内力与各杆件<font face="Calibri">EI</font><font face="宋体">的具体数值无关，只与各杆</font><font face="Calibri">EI</font><font face="宋体">的比值（相对刚度）有关</font></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;"> <o:p></o:p></span></p>
- 2024-03-05 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan;">40、<span style="mso-spacerun:'yes';font-family:等线;font-size:10.5000pt;mso-font-kerning:1.0000pt;">超静定结构有多余的约束</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">，</span><span style="mso-spacerun:'yes';font-family:等线;font-size:10.5000pt;mso-font-kerning:1.0000pt;">单由静力平衡条件不能求出</span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">所有内力和反力</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;"> <o:p></o:p></span></p>
- 2024-03-05 [判断] <p class="MsoNormal">25、<span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">选择</span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">结构的</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">计算简图时，要能反映工程结构物</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">的</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">受力特性</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">、</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">几何特性</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">和</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">支承特性</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2024-03-05 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan;">35、<span style="mso-spacerun:'yes';font-family:等线;font-size:10.5000pt;mso-font-kerning:1.0000pt;">几何不变体系的自由度一定小于</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">或</span><span style="mso-spacerun:'yes';font-family:等线;font-size:10.5000pt;mso-font-kerning:1.0000pt;">等于零</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;"> <o:p></o:p></span></p>
- 2024-03-05 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan;">21、<span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">静定结构是几何不变体系，超静定结构是几何可变体系</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;"> <o:p></o:p></span></p>
- 2024-03-05 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan;">37、<span style="mso-spacerun:'yes';font-family:等线;font-size:10.5000pt;mso-font-kerning:1.0000pt;">移动荷载作用下，某一量值（内力、反力、变形）随位置而变化，使得某一量值发生最大（或最小）值时的荷载位置，称为该量值的最不利荷载位置</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;"> <o:p></o:p></span></p>
- 2024-03-05 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan;">23、<span style="mso-spacerun:'yes';font-family:Microsoft Yahei;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;color:rgb(0,0,0);font-size:10.5000pt;mso-font-kerning:1.0000pt;">桁架中<font face="Calibri">L</font><font face="宋体">形结点处的两根杆件一定是</font></span><span style="mso-spacerun:'yes';font-family:Calibri;color:rgb(0,0,0);font-size:10.5000pt;mso-font-kerning:1.0000pt;">零力杆</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:0.0000pt;">。</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;">( )</span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:0.0000pt;"> <o:p></o:p></span></p>