东北大学12春学期《矿井通风》在线作业1、2、3答案
东北大学12春学期《矿井通风》在线作业1一、单选题：
1. 气流出口的动压损失与什么无关 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">标高</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">空气密度</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">风速</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">空气湿度</span>
2.扇风机的实际工况风压应不超过风机样本最大风压的 （满分：6）
A. 60%<span style="mso-spacerun: yes"></span>
B. 70%<span style="mso-spacerun: yes"></span>
C. 80%<span style="mso-spacerun: yes"></span>
D. 90%
3.硐室型风流的紊流扩散系数可以表征 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">排烟效果好坏</span><span style="FONT-SIZE: 12pt"> </span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">空气的压强大小</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">空气湿度高低</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">空气干净与否</span>
4.井巷的相对粗糙度与哪一因素无关 （满分：6）
A. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">支护型式</span>
B. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">巷道断面大小</span>
C. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">岩壁光滑程度</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: red"><span style="mso-spacerun: yes"></span></span>
D. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">风流速度</span>
5. 压入式通风系统中气流的相对静压不可能出现 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">小于</span><span lang="EN-US" style="FONT-SIZE: 12pt">0</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">大于</span><span lang="EN-US" style="FONT-SIZE: 12pt">0</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">等于</span><span lang="EN-US" style="FONT-SIZE: 12pt">0<span style="mso-spacerun: yes"></span></span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">小于</span><span lang="EN-US" style="FONT-SIZE: 12pt">1<o:p></o:p></span>
6. 气流某处的相对静压与什么无关 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">当地大气压</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">风速</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">全压</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
D. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">压差计摆放高度</span>
7.抢救CO2或H2S中毒者时，最好在输氧中加入少量的CO2气体，其作用是 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">解毒</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">减轻肺水肿</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">刺激呼吸</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改善气味</span>
8.自然风压与下列哪一因素无直接关系 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进口气流温度</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">出口气流温度</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进风井口的标高</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">出风口风速</span>
9. 当风阻增大后，正常应用状态下的风机的流量是 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">减小</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增大</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不变</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">不一定</span>
10. 扇风机串联作用的目的是 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">减小风量</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增大风压</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">节省电力</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增大风量</span>
二、多选题：
1.局部阻力系数永远是正数。 （满分：5）
A. 错误
B. 正确
2.压入通风时，气流的相对静压一定大于零。 （满分：5）
A. 错误
B. 正确
3. 矿井阻力特性曲线越陡，风阻值愈大。 （满分：5）
A. 错误
B. 正确
4.同一湿度和密度不同高度上的静止空气具有的机械能相同。 （满分：5）
A. 错误
B. 正确
5. 开采深度较深的矿井自然风压随季节变化相对较大。 （满分：5）
A. 错误
B. 正确
6.空气的相对静压永远大于零。 （满分：5）
A. 错误
B. 正确
7.一般情况下，湿球温度比干球温度高。 （满分：5）
A. 错误
B. 正确
8.井下气温较地表气温一般呈冬暖夏凉的特征。 （满分：5）
A. 错误
B. 正确转载请注明奥鹏作业答案网 www.ap5u.com
东北大学12春学期《矿井通风》在线作业2
一、单选题：
1.局部风量调节方法不包括 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">増阻调节法</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">降阻调节法</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">辅扇调节法</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增加角联巷道</span>
2.最优排尘风速与下列哪种因素无直接关系。 （满分：6）
A. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">粉尘颗粒大小</span>
B. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">粉尘颗粒的密度</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: red"><span style="mso-spacerun: yes"></span></span>
C. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">作业场所允许的粉尘浓度</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: red"><span style="mso-spacerun: yes"> </span></span>
D. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">空气的温度</span>
3.对带刚性圈的柔性风筒，摩擦阻力系数随气流压力增大而 （满分：6）
A. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">减小</span>
B. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增大</span>
C. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">略增大</span><span style="FONT-SIZE: 12pt; COLOR: red"><span lang="EN-US"><span style="mso-spacerun: yes"></span></span></span>
D. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">略减小</span>
4.两翼对角式通风一般适用于 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">矿体走向长度大的矿井</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">生产能力小的矿井</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">矿体走向短的矿井</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">建井时间紧张的矿井</span>
5.增加并联巷道的数量对于井巷通风系统的作用为 （满分：6）
A. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增加了风阻值</span>
B. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增加了风流的摩擦阻力值</span>
C. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增加了风流的能量消耗</span>
D. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">降低了通风阻力</span>
6. 一般矿井的总风量备用系数应在什么范围 （满分：6）
A. <span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">1.35-1.5</span>
B. <span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">2-2.5</span>
C. <span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">1.1-1.2</span>
D. <span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体">1-2 </span>
7.矿井在进风段的安全出口应不少于 （满分：6）
A. 2<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个</span>
B. 1<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
C. 3<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个</span>
D. 4<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个</span>
8. 抽出式局扇通风的有效吸程与压入式的有效射程相比，通常 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">要小</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"> </span></span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">要大</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span><span style="mso-spacerun: yes"></span></span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">大小不一定</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span><span style="mso-spacerun: yes"></span></span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">二者几乎相等</span>
9.并联巷道风量调节所遵循的基本原则是 （满分：6）
A. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">阻力定律</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: red"><span style="mso-spacerun: yes"></span></span>
B. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">风量守恒定律</span>
C. <span style="FONT-SIZE: 12pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">阻力平衡定律</span><span lang="EN-US" style="FONT-SIZE: 12pt; COLOR: red"><span style="mso-spacerun: yes"></span></span>
D. <span lang="EN-US" style="FONT-SIZE: 12pt">A+B+C<span style="COLOR: red"><o:p></o:p></span></span>
10.矿井总风量调节方法不包括 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改变主扇转数</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改变矿井风阻</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">增加局扇</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">改变动轮叶片安装角度</span>
二、多选题：
1.一般情况下抽出式局扇通风的有效吸程要小于压入式通风时的有效射程。 （满分：5）
A. 错误
B. 正确
2.抽出式通风一定比压入式通风其效果要好。 （满分：5）
A. 错误
B. 正确
3.一般情况下，采用分区通风方式有利于风量的调节。 （满分：5）
A. 错误
B. 正确
4.中央并列式与两翼对角式通风系统相比，可以较早具备采矿条件。 （满分：5）
A. 错误
B. 正确
5.巷道掘进时的混合通风压入式局扇的吸风口距抽出式风筒的吸风口距离至少要大于10m。 （满分：5）
A. 错误
B. 正确
6. 流入节点的流量必定等于流出节点的流量。 （满分：5）
A. 错误
B. 正确
7. 采场的底部出矿结构一般不需要送风。 （满分：5）
A. 错误
B. 正确
8.多机站通风方式正常使用有利于减少漏风。 （满分：5）
A. 错误
B. 正确转载请注明奥鹏作业答案网 www.ap5u.com
东北大学12春学期《矿井通风》在线作业3
一、单选题：
1.哪一种粒径可以表征除尘器的除尘效率 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">分割经</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">众径</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中位径</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">平均径</span>
2. (2分) （满分：6）
A.
B.
C.
D.
3. (2分) （满分：6）
A.
B.
C.
D.
4.下列哪一种不属于湿式除尘器 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">麻石除尘器</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">冲击式除尘器</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">文丘里除尘器</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">袋式除尘器</span>
5.旋风除尘器的结构不包括 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">进口</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">排出管</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">锥体</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">上涡旋</span>
6.粉尘爆炸性与下列哪一因素无关 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">粉尘浓度</span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">粉尘粒径大小</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">氧气浓度</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">粉尘的硬度</span>
7.游离SiO2含量超过10%的粉尘，井下空气中最高允许浓度为 （满分：6）
A. 10mg/m<sup>3<span style="mso-spacerun: yes"></span></sup>
B. 2mg/m<st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="True" sourcevalue="3" unitname="C"><sup>3</sup><span style="mso-spacerun: yes"> </span></st1:chmetcnv>
C. 10g/m<sup>3</sup><span style="mso-spacerun: yes"> </span>
D. <st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="2" unitname="g">2g</st1:chmetcnv>/m<sup>3</sup>
8.除尘器的分割粒径为 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">累计筛下分布为</span><span lang="EN-US" style="FONT-SIZE: 12pt">50%</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的粉尘粒径</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">频率密度分布为最大值对应的粒径</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">分级效率为</span><span lang="EN-US" style="FONT-SIZE: 12pt">50%</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的粒径</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">几何平均粒径</span>
9.卸灰阀的主要作用是 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">隔断空气</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">卸灰</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">阻灰</span>
D. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">卸灰同时阻断空气</span>
10.机械除尘器主要指的是 （满分：6）
A. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">重力沉降室</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes"></span></span>
B. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">惯性除尘器</span>
C. <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">旋风除尘器</span>
D. A+B+C
二、多选题：
1.密度大于1的粉尘颗粒的空气动力学直径一定大于斯托克斯径。 （满分：5）
A. 错误
B. 正确
2. 粉尘粒子的可湿润性直接影响湿式除尘器的除尘效果。 （满分：5）
A. 错误
B. 正确
3. 通常情况下，粉尘的堆积的密度小于其真密度 （满分：5）
A. 错误
B. 正确
4.粉尘粒径的频率分布与粒径分隔区间无关。 （满分：5）
A. 错误
B. 正确
5.一般情况下粉尘粒子与相同体积空气相比，其表现出的惯性力要大很多。 （满分：5）
A. 错误
B. 正确
6.粉尘的荷电性与其导电属性正相关。 （满分：5）
A. 错误
B. 正确
7.粉尘的比电阻愈小，电除尘器的除尘效率愈高。 （满分：5）
A. 错误
B. 正确
8. (2分) （满分：5）
A. 错误
B. 正确
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