成考院校在线答案
- 2022-09-12 [多选] <p class="MsoNormal" style="mso-pagination:widow-orphan">19、<span style="font-size:12.0pt;font-family:方正书宋简体">按用途，电器可分为</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">39、<span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family: "Times New Roman"">典型生产设备的机械特性中，反抗转矩方向总是与运动方向相反。</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">32、<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">35、<span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:等线;mso-fareast-font-family:Microsoft Yahei; color:#333333;mso-font-kerning:0pt">P</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt">LC</span><span style="mso-bidi-font-size:10.5pt;font-family:华文宋体; color:#333333;mso-font-kerning:0pt">中<span lang="EN-US">END</span>指令用于程序结束，即表示程序终了。</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">40、<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>
- 2022-09-12 [判断] <p class="MsoNormal" style="mso-pagination:widow-orphan">32、<span style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-bidi-font-weight: bold">常用的</span><span style="mso-bidi-font-size:10.5pt;font-family:华文宋体; color:#333333;mso-font-kerning:0pt;mso-bidi-font-weight:bold">开关量输出接口有</span><span style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-bidi-font-weight: bold">继电器输出，</span><span style="mso-bidi-font-size:10.5pt;font-family:华文宋体; color:#333333;mso-font-kerning:0pt;mso-bidi-font-weight:bold">晶体管输出及晶闸管输出。</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">26、<span style="mso-bidi-font-size:10.5pt;font-family:华文宋体;color:#333333;mso-font-kerning: 0pt">熔断器在电力拖动系统中实现过载和短路保护作用的保护电器，通常将它的熔体串联在被保护的电路中。</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 [单选] <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"">机电传动的目的是将电能转换为</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><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 [单选] <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"">在鼠笼式异步电动机反接制动过程中，当电动机转速降至很低时，应立即切断电源，防止</span><u><span lang="EN-US"><span style="mso-spacerun:yes"> </span></span></u><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 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">2、<span style="font-size:12.0pt;font-family:方正书宋简体">点动与长动的区别是</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>