成考院校在线答案
- 2022-09-12 [单选] <p class="MsoNormal">34、<span style="font-family:宋体">发动机的机械摩擦损失<u>不</u>包括</span> <span style="font-family:宋体">（</span><span lang="EN-US"> </span><span style="font-family:宋体">）。</span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">31、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">扭矩储备率</span><span lang="EN-US" style="font-family:黑体"><span style="position:relative;top:5.0pt; mso-text-raise:-5.0pt"> <v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <v:stroke joinstyle="miter"></v:stroke> <v:formulas> <v:f eqn="if lineDrawn pixelLineWidth 0"></v:f> <v:f eqn="sum @0 1 0"></v:f> <v:f eqn="sum 0 0 @1"></v:f> <v:f eqn="prod @2 1 2"></v:f> <v:f eqn="prod @3 21600 pixelWidth"></v:f> <v:f eqn="prod @3 21600 pixelHeight"></v:f> <v:f eqn="sum @0 0 1"></v:f> <v:f eqn="prod @6 1 2"></v:f> <v:f eqn="prod @7 21600 pixelWidth"></v:f> <v:f eqn="sum @8 21600 0"></v:f> <v:f eqn="prod @7 21600 pixelHeight"></v:f> <v:f eqn="sum @10 21600 0"></v:f> </v:formulas> <v:path o:extrusionok="f" gradientshapeok="t" o:connecttype="rect"></v:path> <o:lock v:ext="edit" aspectratio="t"></o:lock> </v:shapetype> <v:shape id="_x0000_i1025" type="#_x0000_t75" style="width:12pt; height:12.75pt" o:ole=""> <v:imagedata src="QCFDJYL6.files/image001.wmz" o:title=""></v:imagedata> </v:shape></span> <!--[if gte mso 9]><xml _tmplitem="6" > <o:OLEObject Type="Embed" ProgID="Equation.3" ShapeID="_x0000_i1025" DrawAspect="Content" ObjectID="_1678522797"> </o:OLEObject> </xml><![endif]--><sub>m</sub></span><span style="mso-bidi-font-size:10.5pt; font-family:黑体">的定义为：（）。</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;font-family:黑体;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">30、<span style="font-family:宋体">发动机铭牌上所给出的有效功率是（</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" style="mso-pagination:widow-orphan">38、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">四冲程发动机换气过程中存在气门叠开现象的原因是（）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">40、<span style="font-family:宋体">四冲程发动机活塞运行到排气行程上止点时，（</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" style="mso-pagination:widow-orphan">37、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">做发动机全负荷速度特性时，应该将发动机的（）。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">33、<span style="mso-bidi-font-size:10.5pt;font-family:黑体">柴油机的燃烧过程是以（）为主的燃烧过程。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-font-kerning: 0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">32、<span style="font-family:宋体">以下属于常用汽油机燃烧室形状的是（</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" style="mso-pagination:widow-orphan">29、<span style="mso-bidi-font-size:10.0pt;font-family:黑体;mso-bidi-font-family:Microsoft Yahei; color:black">当发动机转速一定，负荷增加时</span><span style="mso-bidi-font-size:10.5pt; font-family:黑体">（）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; font-family:黑体;mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="mso-pagination:widow-orphan">28、<span style="font-family:黑体">对于柴油机而言，随着空燃比<span lang="EN-US">A/F</span>的增加，<span lang="EN-US">NOX</span>的浓度逐渐</span><span style="mso-bidi-font-size:10.5pt; font-family:黑体">（）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; font-family:黑体;mso-font-kerning:0pt"> <o:p></o:p></span></p>