20春学期《通风与安全》在线平时作业1

adminhan

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 24pt; TEXT-INDENT: -24pt; mso-list: l0 level1 lfo1; tab-stops: list 24.0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'"><span style="mso-list: Ignore"><span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp; </span></span></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">当风阻增大后，正常应用状态下的风机的流量是</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p><p class="MsoNormal" style="TEXT-INDENT: 24pt; mso-char-indent-count: 2.0">&nbsp;</p>
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>

&nbsp; <p class="MsoNormal"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">粉尘粒径的描述方法不包括</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-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-bidi-font-family: 'Times New Roman'">定向径</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><span style="mso-spacerun: yes">&nbsp;&nbsp;</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'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'">斯托克斯径</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><span style="mso-spacerun: yes">&nbsp;</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'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'">空气动力学直径</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><span style="mso-spacerun: yes">&nbsp;</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'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'">速度当量径</span>

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 24pt; TEXT-INDENT: -24pt; mso-list: l0 level1 lfo1; tab-stops: list 24.0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'"><span style="mso-list: Ignore"><span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp; </span></span></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">总风压掘进通风的能量来源为</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p><p class="MsoNormal" style="TEXT-INDENT: 24pt; mso-char-indent-count: 2.0"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"></span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p><font face="宋体"></font></o:p></span></p>
A:<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">纵向风墙挡风</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'">导风筒导风</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></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'">平行巷道导风</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'">主风流风压</span>

&nbsp; <p class="MsoNormal"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">相同温度和压力下，湿空气的密度与干空气相比要</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-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">大</span><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"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;</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'; mso-bidi-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">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'; mso-bidi-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">相等</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'; mso-bidi-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">不一定</span><span 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"> </span>

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 24pt; TEXT-INDENT: -24pt; mso-list: l0 level1 lfo1; tab-stops: list 24.0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'"><span style="mso-list: Ignore"><span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp; </span></span></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">通常情况下，井巷风流的摩擦阻力与下列哪种因素无关</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p><p class="MsoNormal" style="TEXT-INDENT: 24pt; mso-char-indent-count: 2.0"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"></span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p><font face="宋体"></font></o:p></span></p>
A:Re
B:<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">巷道长度</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'">气流速度</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;</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'">井巷的相对光滑度</span>

&nbsp; <p class="MsoNormal"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">矿井的每一个作业中段水平至少应有</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-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-bidi-font-family: 'Times New Roman'">一个出口</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'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'">两个出口</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'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'">三个出口</span><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 'Times New Roman'; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;</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'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'">四个出口</span>

&nbsp; <p class="MsoNormal"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">某处空气的相对静压一定不小于此处的绝对静压吗？</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p><p class="MsoNormal" style="TEXT-INDENT: 24pt; mso-char-indent-count: 2.0"><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一定</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'">不一定</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'">不对</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;</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'">取决于空气湿度</span>

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 24pt; TEXT-INDENT: -24pt; mso-list: l0 level1 lfo1; tab-stops: list 24.0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'"><span style="mso-list: Ignore"><span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp; </span></span></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">局部阻力系数的大小与下列哪一因素有关</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p><p class="MsoNormal" style="TEXT-INDENT: 24pt; mso-char-indent-count: 2.0"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'"></span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p><font face="宋体"></font></o:p></span></p>
A:<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">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'">气流粘性</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'">气体密度</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'">管段形状</span>

<img width="491" height="71" alt="" src="http://file.open.com.cn/ItemDB/80580/a4df0544-cf90-4169-b03a-043039531cb4/2010814185450656.jpg" />（2分）
A:A
B:B
C:C
D:D

&nbsp; <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">地面正常空气中</span><span lang="EN-US" style="FONT-SIZE: 12pt">O2</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的组分为：</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span>
A:35%
B:20.9%<span style="mso-spacerun: yes">&nbsp;&nbsp;</span>
C:16.7%
D:5.9%

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">除尘器对粉尘的全效率总是大于分级效率。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">多机站通风方式正常使用有利于减少漏风。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确

<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-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">空气的绝对温度比摄氏温度高</span><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">273.15</span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-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">度。</span>
A:错误
B:正确

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 24pt; TEXT-INDENT: -24pt; mso-list: l0 level1 lfo1; tab-stops: list 24.0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'"><span style="mso-list: Ignore"><span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp; </span></span></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">风机的效率表征其消耗功率的大小。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'"><span style="mso-list: Ignore"><span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp; </span></span></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">通常情况下，粉尘的堆积的密度小于其真密度。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确

<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-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-bidi-font-family: 'Times New Roman'">压轴混合式通风系统中巷道中风流的压力相对比较均衡。</span>
A:错误
B:正确

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo1; tab-stops: list 18.0pt"><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">一般情况下，采用分区通风方式有利于风量的调节。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确

&nbsp; <p class="MsoNormal" style="MARGIN-LEFT: 24pt; TEXT-INDENT: -24pt; mso-list: l0 level1 lfo1; tab-stops: list 24.0pt"><span lang="EN-US" style="FONT-SIZE: 12pt; mso-fareast-font-family: 'Times New Roman'"><span style="mso-list: Ignore"><span style="FONT: 7pt 'Times New Roman'">&nbsp;&nbsp;&nbsp; </span></span></span><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'">空气的内摩擦消耗的机械能转换为空气的热能。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确