成考院校在线答案
- 2022-09-12 [多选] <p class="MsoNormal" style="mso-pagination:widow-orphan">4、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">平移运动系统的折算是将</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 lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [多选] <p class="MsoNormal" style="mso-pagination:widow-orphan">8、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">在状态转移图中要有以下要素</span><span lang="EN-US">_______</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" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [多选] <p class="MsoNormal" style="mso-pagination:widow-orphan">3、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">以下属于主令电器的是</span><span lang="EN-US">_______</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" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">16、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">实际的拖动系统常是单轴拖动系统，这是因为多轴拖动系统中克服传动摩擦耗损的能量过多。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:black;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">23、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">电动机运行在启动状态下，电动机转矩和转速方向是相反的。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">17、<span style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt">正常工作时，流过熔体的电流大于它的额定电流。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">13、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">机电传动系统中，电动机的转矩始终大于负载的转矩，就是稳定系统。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">14、<span style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt">主电路中只有电动机，没有其它电气元件。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">10、<span style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt">采用交流接触器、按钮等构成的鼠笼式异步电动机直接启动控制电路，为什么在合上电源开关后，电动机启动、停止控制都正常，但转向却是反的，这是因为引入电动机的电源相序错误。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">20、<span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt">PLC</span><span style="mso-bidi-font-size:10.5pt;font-family:华文宋体; color:#333333;mso-font-kerning:0pt">中的空<span style="mso-bidi-font-weight: bold">操作指令</span><span lang="EN-US">NOP</span>不影响机器的<span style="mso-bidi-font-weight: bold">扫描周期。</span></span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; mso-font-kerning:0pt"> <o:p></o:p></span></p>