20春学期《安全检测及仪表》在线平时作业2

adminhan

&nbsp;&nbsp;<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; </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'">区分声音的强弱，用响度来表示，主要靠声音的（</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </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'">）。</span>
A:<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">声压</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'">频率</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'">波形</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'">声强</span>

<p class="MsoNormal" style="MARGIN-LEFT: 42pt; TEXT-INDENT: -21pt; mso-list: l0 level1 lfo1; tab-stops: list 42.0pt"><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'">选择压力仪表，一般被测压力的最小值不应低于仪表量程范围的（</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp; </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'">）。</span></p>
A:<span lang="EN-US" style="FONT-SIZE: 12pt">1/2<span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span>
B:<span lang="EN-US" style="FONT-SIZE: 12pt">1/<st1:chmetcnv w:st="on" tcsc="0" numbertype="1" negative="False" hasspace="True" sourcevalue="3" unitname="C">3<span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></st1:chmetcnv></span>
C:<span lang="EN-US" style="FONT-SIZE: 12pt">1/4<span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span>
D:<span lang="EN-US" style="FONT-SIZE: 12pt">1/5<o:p></o:p></span>

<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;&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'">一般认为，粒径在（</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </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'">）以下的工业粉尘就是呼吸性粉尘。</span></p>
A:<font size="3">5<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">&mu;</span><span lang="EN-US" style="FONT-SIZE: 12pt">m<span style="mso-spacerun: yes">&nbsp; </span></span></font>
B:<font size="3">10<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">&mu;</span><span lang="EN-US" style="FONT-SIZE: 12pt">m<span style="mso-spacerun: yes">&nbsp;</span></span></font>
C:<font size="3">5nm<span style="mso-spacerun: yes">&nbsp;</span></font>
D:<font size="3">10nm</font>

<p class="MsoNormal" style="MARGIN-LEFT: 42pt; TEXT-INDENT: -21pt; mso-list: l0 level1 lfo1; tab-stops: list 42.0pt"><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;&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'">温度计正常工作指示值应为仪表满量程的（</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp; </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'">）。</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 lang="EN-US" style="FONT-SIZE: 12pt">20%~80%<span style="mso-spacerun: yes">&nbsp;&nbsp;</span></span>
B:<span lang="EN-US" style="FONT-SIZE: 12pt">30%~70%<span style="mso-spacerun: yes">&nbsp;</span></span>
C:<span lang="EN-US" style="FONT-SIZE: 12pt">50%~70%<span style="mso-spacerun: yes">&nbsp;&nbsp;</span></span>
D:<span lang="EN-US" style="FONT-SIZE: 12pt">50%~80%<o:p></o:p></span>

<font face="Arial">光敏电阻在受到光照射时的电流称为（&nbsp;&nbsp;&nbsp; ）。</font>
A:额定电流
B:亮电流
C:光电流
D:暗电流

<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'">以下属于反馈网络的有（</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </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'">）。</span></p>
A:<font size="3">Hopfield<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">网络</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp; </span></span></font>
B:<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">递归神经网络</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp; </span></span>
C:<font size="3">&nbsp;BP<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">网络</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp; </span></span></font>
D:<font size="3">&nbsp;<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">前向网络</span></font>

<p class="MsoNormal" style="MARGIN-LEFT: 42pt; TEXT-INDENT: -21pt; mso-list: l0 level1 lfo1; tab-stops: list 42.0pt"><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;</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'">流量检测仪表选择时应考虑的因素有（</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </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'">）。</span></p>
A:<font size="3"><font face="宋体">类型</font><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span></font>
B:<font size="3"><font face="宋体">量程</font><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;</span></span></font>
C:<font size="3"><font face="宋体">精度</font><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </span></span></font>
D:<font face="宋体" size="3">价格</font>

<font face="Arial">热电偶属于（&nbsp;&nbsp;&nbsp; ）。<br /></font>
A:物理量传感器
B:温度传感器&nbsp;
C:结构型传感器&nbsp;
D:能量转换型传感器

<font face="Arial">属于电器设备干扰的有（&nbsp;&nbsp;&nbsp; ）<br /></font>
A:射频干扰
B:工频干扰
C:感应干扰
D:火花放电干扰

<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'">相对于常规测温技术，红外检测技术的特点有（</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </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'">）。</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'">非接触性</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&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'">安全性极强</span><span lang="EN-US" style="FONT-SIZE: 12pt"><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'">检测准确</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'">检测效率高</span>

<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'">射线检测的方法有（</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp; </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'">）。</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'">照相法</span><span lang="EN-US" style="FONT-SIZE: 12pt"><span style="mso-spacerun: yes">&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'">电离检测法</span><span lang="EN-US" style="FONT-SIZE: 12pt"><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'">荧光屏观察法</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'">电视观察法</span>

&nbsp; <span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">热电偶热电势的大小，与导体的粗细长短及两导体接触面积都有关。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span>
A:错误
B:正确

<font face="Arial">从能量的角度出发，可将传感器划分为两种类型：能量控制型和能量转换型。</font>
A:错误
B:正确

&nbsp;&nbsp;<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; </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'">本质安全型结构也适用于电气设备或电动机。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span>
A:错误
B:正确

<p class="MsoNormal" style="MARGIN-LEFT: 42pt; TEXT-INDENT: -21pt; mso-list: l0 level1 lfo1; tab-stops: list 42.0pt"><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;&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'">依据安全决策时所凭借的冗余信息类型的不同，安全决策分为基于硬件冗余、解析冗余和知识冗余，以及基于多种冗余信息融合等不同方式。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确

<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;&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'">在给出粉尘比电阻数据时，不需标明所用仪器和方法。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确

<font face="Arial">热电偶传感器属于能量转换型传感器。</font>
A:错误
B:正确

<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; </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'">由于粒径发布、浓度等不同，煤尘可能是爆炸性粉尘，也可能是无爆炸性粉尘。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确

<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'">火灾自动报警系统中的触发器件是指火灾探测器。</span><span lang="EN-US" style="FONT-SIZE: 12pt"><o:p></o:p></span></p>
A:错误
B:正确