《粉体工程》武汉理工大学20春作业一
粉体工程_作业一1.[多选题] 介质磨剥类超细粉碎设备可选择进行的操作工艺(可多选):______。
奥鹏作业答案可以联系QQ 761296021
A.干法
B.湿法
C.连续
D.间歇
正确答案:——ABCD——
2.[多选题] <p class="MsoNormal" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; "><span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">某一粉体粒度分布符合正态分布,其频度分布函数为:</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="215" height="58" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc01.files/ftkxygc0110512.png"></span><span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">,则其平均粒径</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="33" height="22" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc01.files/ftkxygc0110520.png"></span><span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">______;标准偏差</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="28" height="18" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc01.files/ftkxygc0110532.png"></span><span style="mso-spacerun:'yes'; font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; ">______。</span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><o:p></o:p></span>
A.<p class="MsoNormal" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; " style="display:inline;"><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="38" height="30" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc01.files/ftkxygc0110542.png"></span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><o:p> </o:p></span>
B.<p class="MsoNormal" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; " style="display:inline;"><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="27" height="23" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc01.files/ftkxygc0110545.png"></span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><o:p> </o:p></span>
C.<p class="MsoNormal" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; " style="display:inline;"><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="35" height="23" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc01.files/ftkxygc0110548.png"></span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><o:p> </o:p></span>
D.<p class="MsoNormal" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; " style="display:inline;"><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="48" height="49" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc01.files/ftkxygc0110551.png"></span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><o:p> </o:p></span>
E.<p class="MsoNormal" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; " style="display:inline;"><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="97" height="52" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc01.files/ftkxygc0110554.png"></span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><o:p> </o:p></span>
F.<p class="MsoNormal" style="margin-top:0.0000pt; margin-right:0.0000pt; margin-bottom:0.0000pt; margin-left:0.0000pt; mso-pagination:none; text-align:justify; text-justify:inter-ideograph; " style="display:inline;"><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><img width="88" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc01.files/ftkxygc0110557.png"></span><span style="font-family:Microsoft Yahei; font-size:12.0000pt; mso-font-kerning:1.0000pt; "><o:p> </o:p></span>
正确答案:——BF——
3.[多选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">在极限应力状态下,测得某粉体压应力</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="26" height="26" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0310965.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">和剪应力</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="18" height="19" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0310970.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">符合线性关系:</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="198" height="39" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0310978.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">,则该粉体的内摩擦角</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="45" height="36" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0310989.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">_______,表观抗张强度</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="51" height="33" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311004.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">_______</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="52" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311036.png"></span>。<span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
A.30º
B.45º
C.60º
D.1.0
E.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="48" height="48" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311061.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
F.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="72" height="36" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311064.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
正确答案:——CF——
4.[多选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">若已知粉体层中某处的最大主应力</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="26" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311517.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">和最小主应力</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="31" height="32" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311524.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">,则该位置的压应力和剪应力关系,可通过在</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="55" height="25" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311545.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"> </span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;">坐标中作出相应的莫尔圆给出。莫尔圆的圆心坐标为:_______;半径为:_______。</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="137" height="67" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311593.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="134" height="67" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311596.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="124" height="43" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311599.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="77" height="60" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311602.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
E.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="80" height="55" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311605.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
F.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><img width="96" height="36" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc03.files/ftkxygc0311608.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
正确答案:————
5.[判断题] 物料干燥的三个过程是指:加热过程、外扩散过程和内扩散过程。
A.正确
B.错误
正确答案:————
6.[判断题] 滤饼过滤的基本类型包括:加压过滤、压榨过滤、离心过滤和真空过滤。
A.正确
B.错误
正确答案:————
7.[判断题] 理想库仑粉体的内聚力较小,通常粒度微细的粉体符合这一规律。
A.正确
B.错误
正确答案:————
8.[判断题] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan"><span lang="EN-US" style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black;mso-font-kerning:0pt;mso-bidi-language:AR">Rosin-Rammler</span><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black;mso-font-kerning:0pt;mso-bidi-language:AR">粒度分布方程<span lang="EN-US"> <!--><v:shape id="图片_x0020_231" o:spid="_x0000_i1096" type="#_x0000_t75" style='width:193.8pt; height:71.4pt;mso-wrap-style:square;mso-position-horizontal-relative:page; mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image068.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc06.files/ftkxygc061561.png"/></v:shape><!--> <!----><img width="258" height="95" v:shapes="图片_x0020_231" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image068.png"> <!----></span>中,<span lang="EN-US"> <!--><v:shape id="图片_x0020_232" o:spid="_x0000_i1097" type="#_x0000_t75" style='width:42.6pt;height:28.2pt;mso-wrap-style:square; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image069.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc06.files/ftkxygc061564.png"/></v:shape><!--> <!----><img width="57" height="38" v:shapes="图片_x0020_232" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image069.png"> <!----></span>是筛上累积质量百分数。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"><o:p></o:p></span>
A.正确
B.错误
正确答案:————
9.[判断题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;">若细颗粒回收率为</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;"><img width="26" height="32" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc06.files/ftkxygc0613877.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;">,粗颗粒回收率为</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;"><img width="22" height="32" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc06.files/ftkxygc0613886.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;">,则综合分级效率(</span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;">Newton</span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;">分级效率)</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;"><img width="32" height="31" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc06.files/ftkxygc0613907.png"></span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;">的计算式为:</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;"><img width="140" height="36" src="http://wljy.whut.edu.cn:80/uploadfiles/word/ftkxygc06.files/ftkxygc0613914.png"></span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;">。</span><span style="font-family:Microsoft Yahei;font-size:12.0000pt;mso-font-kerning:0.0000pt;"><o:p></o:p></span>
A.正确
B.错误
正确答案:————
10.[判断题] 过滤是固液分离的第一步,浓缩是固液分离的第二步。
A.正确
B.错误
正确答案:————
11.[判断题] 脆性反映的是物料抗冲击力大小的特性,韧性则反映物料抗冲击断裂阻力的特性。
A.正确
B.错误
正确答案:————
12.[判断题] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan"><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black;mso-font-kerning:0pt;mso-bidi-language:AR">颗粒沉降速度计算式:<span lang="EN-US"> <!--><v:shape id="图片_x0020_211" o:spid="_x0000_i1085" type="#_x0000_t75" style='width:129pt; height:51pt;mso-wrap-style:square;mso-position-horizontal-relative:page; mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image059.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc05.files/ftkxygc052517.png"/></v:shape><!--> <!----><img width="172" height="68" v:shapes="图片_x0020_211" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image059.png"> <!----></span>适用于层流区,即颗粒雷诺数<span lang="EN-US"> <!--><v:shape id="图片_x0020_212" o:spid="_x0000_i1086" type="#_x0000_t75" style='width:102.6pt;height:48pt;mso-wrap-style:square; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image060.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc05.files/ftkxygc052537.png"/></v:shape><!--> <!----><img width="137" height="64" v:shapes="图片_x0020_212" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image060.png"> <!---->< 1</span>的条件;<span lang="EN-US"> <!--><v:shape id="图片_x0020_213" o:spid="_x0000_i1087" type="#_x0000_t75" style='width:171.6pt;height:59.4pt;mso-wrap-style:square; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image061.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc05.files/ftkxygc052550.png"/></v:shape><!--> <!----><img width="229" height="79" v:shapes="图片_x0020_213" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image061.png"> <!----></span>?适用于湍(或紊)流区,即颗粒雷诺数<span lang="EN-US"> <!--><v:shape id="图片_x0020_214" o:spid="_x0000_i1088" type="#_x0000_t75" style='width:92.4pt;height:47.4pt;mso-wrap-style:square; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image062.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc05.files/ftkxygc052571.png"/></v:shape><!--> <!----><img width="123" height="63" v:shapes="图片_x0020_214" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image062.png"> <!---->>1000</span>的条件。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"><o:p></o:p></span>
A.正确
B.错误
正确答案:————
13.[判断题] 按粉磨机械的施力方式可分为:料床挤压类磨机、机械冲击类磨机和研磨介质类磨机。
A.正确
B.错误
正确答案:————
14.[判断题] <p class="MsoNormal" align="left" style="text-align:left;"> <span style="font-size:12.0pt;font-family:Microsoft Yahei;color:black;">粉体的流动函数<span>FF</span>被定义为:粉体密实所施加的最大主应力<span> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204171941_17.png" alt="" /></span>与粉体的开放屈服强度<span> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204172035_834.png" alt="" /></span>之比,则<span>FF</span>值越小,相应粉体的流动性就会越差。</span><span style="font-size:12.0pt;"> </span>
A.正确
B.错误
正确答案:————
15.[判断题] 斗式提升机的机型按卸料方式可分为:离心式、混合式、内卸式和重力式。
A.正确
B.错误
正确答案:————
16.[判断题] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan"><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black;mso-font-kerning:0pt;mso-bidi-language:AR">在透过流中,<span lang="EN-US">Ergun</span>公式:<span lang="EN-US"> <!--><v:shape id="图片_x0020_216" o:spid="_x0000_i1089" type="#_x0000_t75" style='width:327pt;height:59.4pt;mso-wrap-style:square; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image063.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc05.files/ftkxygc053557.png"/></v:shape><!--> <!----><img width="436" height="79" v:shapes="图片_x0020_216" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image063.png"> <!----></span>(<span lang="EN-US">Pa/m</span>)建立了颗粒固定床压降与净空流速的关系。当流动处于层流时,式中第<span lang="EN-US">2</span>项可忽略;当流动处于湍流时,式中第<span lang="EN-US">1</span>项可忽略。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"><o:p></o:p></span>
A.正确
B.错误
正确答案:————
17.[判断题] 在极限应力状态下,测得某一粉体层压应力σ与剪应力τ的关系符合线性方程:τ=σ(KPa)。则该粉体层内摩擦角为45o,内聚力为0。
A.正确
B.错误
正确答案:————
18.[判断题] 粉碎的主要施力方式可分为压碎、磨剥、弯折、劈碎和击碎。
A.正确
B.错误
正确答案:————
19.[判断题] 国内目前采用的斗式提升机主要类型分为:带式、环链式和板链式。
A.正确
B.错误
正确答案:————
20.[判断题] 国内目前采用的斗式提升机主要类型分为:环链式、板链式和带式。
A.正确
B.错误
正确答案:————
21.[判断题] 在非常干燥的空气中,粉体凝聚的主要作用力是范德华力。
A.正确
B.错误
正确答案:————
22.[判断题] 粉体的摩擦角主要有休止角和内摩擦角,以及壁面摩擦角和运动摩擦角。
A.正确
B.错误
正确答案:————
23.[判断题] 理论和实验均表明,粉碎的能量效率随着施载强度的增加而降低。
A.正确
B.错误
正确答案:————
24.[判断题] <p class="MsoNormal" align="left" style="text-align:left;"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204171315_190.png" alt="" />
A.正确
B.错误
正确答案:————
25.[判断题] 两个平均粒度相等的颗粒群,其粒度分布完是相同的。
A.正确
B.错误
正确答案:————
26.[判断题] 采用静载荷下测定的抗压、抗拉、抗剪和抗弯强度来表示物料的抗破碎阻力,通常,抗压强度最大,抗剪强度次之,抗弯强度较小,抗拉强度最小。
A.正确
B.错误
正确答案:————
27.[判断题] 在气力输送的分类中,按工作压力分为:正压输送、负压输送和混合输送系统。
A.正确
B.错误
正确答案:————
28.[判断题] 吸附是指,在液-固或气-固两相界面上,气体或液体密度增加的现象。
A.正确
B.错误
正确答案:————
29.[判断题] 细颗粒回收率是指:实际回收到细粉组中的细颗粒与原料中细颗粒 的质量之比。
A.正确
B.错误
正确答案:————
30.[判断题] <p class="MsoNormal" align="left" style="margin-top:7.8pt;mso-para-margin-top:.5gd;text-align:left;mso-pagination:widow-orphan"><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black;mso-font-kerning:0pt;mso-bidi-language:AR">颗粒沉降速度计算式:<span lang="EN-US"> <!--><v:shape id="图片_x0020_77" o:spid="_x0000_i1062" type="#_x0000_t75" style='width:126pt; height:51pt;mso-wrap-style:square;mso-position-horizontal-relative:page; mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image036.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc03.files/ftkxygc035485.png"/></v:shape><!--> <!----><img width="168" height="68" v:shapes="图片_x0020_77" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image036.png"> <!----></span>所适用的颗粒雷诺数范围小于<span lang="EN-US">1</span>;<span lang="EN-US"> <!--><v:shape id="图片_x0020_78" o:spid="_x0000_i1063" type="#_x0000_t75" style='width:162pt;height:51.6pt; mso-wrap-style:square;mso-position-horizontal-relative:page; mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image037.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc03.files/ftkxygc035505.png"/></v:shape><!--> <!----><img width="216" height="69" v:shapes="图片_x0020_78" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image037.png"> <!----></span>所适用的颗粒雷诺数范围大于<span lang="EN-US">1000</span>。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"><o:p></o:p></span>
A.正确
B.错误
正确答案:————
31.[判断题] 按粉磨机械的施力方式可分为:研磨介质类磨机、料床挤压类磨机和机械冲击类磨机。
A.正确
B.错误
正确答案:————
32.[判断题] 物料干燥的三个过程是指:加热过程、外扩散过程和内扩散过程。
A.正确
B.错误
正确答案:————
33.[判断题] <p class="MsoNormal" align="left" style="text-align:left;mso-pagination:widow-orphan"><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black;mso-font-kerning:0pt;mso-bidi-language:AR">若已知某一颗粒的实际表面积为<span lang="EN-US">A</span>,与该实际颗粒同体积的球形颗粒表面积为<span lang="EN-US">B</span>,则根据形状指数球形度<span lang="EN-US"> <!--><v:shape id="图片_x0020_199" o:spid="_x0000_i1080" type="#_x0000_t75" style='width:19.2pt; height:24pt;mso-wrap-style:square;mso-position-horizontal-relative:page; mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image054.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc05.files/ftkxygc051515.png"/></v:shape><!--> <!----><img width="26" height="32" v:shapes="图片_x0020_199" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image054.png"> <!----></span>的定义,<span lang="EN-US"> <!--><v:shape id="图片_x0020_200" o:spid="_x0000_i1081" type="#_x0000_t75" style='width:32.4pt;height:24pt;mso-wrap-style:square; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image055.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc05.files/ftkxygc051520.png"/></v:shape><!--> <!----><img width="43" height="32" v:shapes="图片_x0020_200" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image055.png"> <!---->B/A</span>。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"><o:p></o:p></span>
A.正确
B.错误
正确答案:————
34.[判断题] 在散式流态化中,当床层净空速度在临界流化速度和极限流化速度范围内变化时,随着净空速度的增大,流化床床层压降不会变化。
A.正确
B.错误 无忧答案网 q1 6 4 7 861640
正确答案:————
35.[判断题] 颗粒在液体中的分散原则是,极性表面颗粒易于在非极性液体中分散。
A.正确
B.错误
正确答案:————
36.[判断题] <p class="MsoNormal" align="left" style="text-align:left;"> <img src="http://wljy.whut.edu.cn:80/uploadfiles/kindeditorAttached/image/20191204/20191204163108_909.png" alt="" />
A.正确
B.错误
正确答案:————
37.[判断题] <p class="MsoNormal" align="left" style="margin-top:7.8pt;mso-para-margin-top:.5gd;text-align:left;mso-pagination:widow-orphan"><span style="font-size:12.0pt;font-family:Microsoft Yahei;mso-bidi-font-family:Microsoft Yahei;color:black;mso-font-kerning:0pt;mso-bidi-language:AR">若颗粒群符合对数正态分布,则其频度分布函数为<span lang="EN-US">: <!--><v:shape id="图片_x0020_58" o:spid="_x0000_i1052" type="#_x0000_t75" style='width:253.8pt; height:45.6pt;mso-wrap-style:square;mso-position-horizontal-relative:page; mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image027.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc03.files/ftkxygc031456.png"/></v:shape><!--> <!----><img width="338" height="61" v:shapes="图片_x0020_58" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image027.png"> <!----></span>,式中,<span lang="EN-US"> <!--><v:shape id="图片_x0020_59" o:spid="_x0000_i1053" type="#_x0000_t75" style='width:24pt;height:28.2pt;mso-wrap-style:square; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image028.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc03.files/ftkxygc031461.png"/></v:shape><!--> <!----><img width="32" height="38" v:shapes="图片_x0020_59" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image028.png"> <!----></span>称为几何平均径;<span lang="EN-US"> <!--><v:shape id="图片_x0020_60" o:spid="_x0000_i1054" type="#_x0000_t75" style='width:21pt;height:26.4pt;mso-wrap-style:square; mso-position-horizontal-relative:page;mso-position-vertical-relative:page'> <v:imagedata src="FTGCPD.files/image029.png" o:href="http://wljy.whut.edu.cn/uploadfiles/word/ftkxygc03.files/ftkxygc031472.png"/></v:shape><!--> <!----><img width="28" height="35" v:shapes="图片_x0020_60" src="http://wljy.whut.edu.cn:80/uploadfiles/word/FTGCPD.files/image029.png"> <!----></span>称为几何标准偏差。</span><span lang="EN-US" style="font-size:12.0pt;mso-font-kerning:0pt"><o:p></o:p></span>
A.正确
B.错误
正确答案:————
38.[判断题] 表征颗粒几何形状的形状因子分为:形状指数和形状系数。
A.正确
B.错误
正确答案:————
39.[单选题] 用于提升粉状、粒状及小块、能自由流动的物料,如煤、水泥、生料、矿渣、石灰石等,宜采用哪一种斗式提升机?
A. 重力式卸料
B. 离心式卸料
C. 混合式卸料
正确答案:————
40.[单选题] <p class="MsoNormal" style="mso-pagination:widow-orphan"><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";color:windowtext">在粉体层最大主应力</span><span lang="EN-US" style="color:windowtext"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"> <v:shape id="_x0000_i1029" type="#_x0000_t75" style="width:13.8pt; height:18pt" o:ole=""> <v:imagedata src="FTGCDX.files/image005.wmz" o:title="" /> </v:shape></span><!--><xml> <o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1029" DrawAspect="Content" ObjectID="_1616487362"> </o:OLEObject></xml><!--></span><span style="font-family:Microsoft Yahei;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";color:windowtext">作用面上,其剪切应力为</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;color:windowtext;mso-font-kerning:0pt"><o:p></o:p></span>
A.最小
B.最大
C.≠0
D.0
正确答案:————
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