200204.htm

等级考试三级试题全集

<p class=a2><span lang=EN-US>A) 3231H<span style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>B)
1234H<span style='mso-spacerun:yes'>&nbsp;&nbsp; </span><span style='mso-tab-count:
2'>&nbsp;&nbsp;&nbsp;&nbsp; </span>C) 3132H<span
style='mso-spacerun:yes'>&nbsp;&nbsp; </span><span style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp; </span>D)
0000H</span></p>

<p class=a1 style='margin-left:21.7pt;text-indent:-21.7pt;mso-list:l7 level1 lfo90'><![if !supportLists]><span
lang=EN-US style='font-family:宋体;mso-bidi-font-family:宋体'><span
style='mso-list:Ignore'>(31)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
lang=EN-US style='font-family:宋体'><span style='mso-spacerun:yes'>&nbsp;</span>执行下面的指令<o:p></o:p></span></p>

<p class=MsoNormal style='text-indent:30.0pt'><span lang=EN-US
style='font-family:宋体'>MOV<span style='mso-spacerun:yes'>&nbsp; </span>AX， 123H<o:p></o:p></span></p>

<p class=MsoNormal style='text-indent:30.0pt'><span lang=EN-US
style='font-family:宋体'>MOV<span style='mso-spacerun:yes'>&nbsp; </span>DX，4<o:p></o:p></span></p>

<p class=MsoNormal style='text-indent:30.0pt'><span lang=EN-US
style='font-family:宋体'>MUL<span style='mso-spacerun:yes'>&nbsp; </span>DX<span
style='mso-spacerun:yes'>&nbsp; </span><o:p></o:p></span></p>

<p class=MsoNormal style='text-indent:30.0pt'><span lang=EN-US
style='font-family:宋体'>AX寄存器中的数据是：<o:p></o:p></span></p>

<p class=a2><span lang=EN-US>A) 4936H<span style='mso-spacerun:yes'>&nbsp;
</span><span style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>B) 48D0H<span
style='mso-spacerun:yes'>&nbsp;&nbsp; </span><span style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp; </span>C)
2340H<span style='mso-spacerun:yes'>&nbsp;&nbsp; </span><span style='mso-tab-count:
2'>&nbsp;&nbsp;&nbsp;&nbsp; </span>D) 0234H</span></p>

<p class=a1 style='margin-left:21.7pt;text-indent:-21.7pt;mso-list:l7 level1 lfo90'><![if !supportLists]><span
lang=EN-US style='font-family:宋体;mso-bidi-font-family:宋体'><span
style='mso-list:Ignore'>(32)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-family:宋体'>对于指令<span lang=EN-US>MOV XA，0和指令XORAX，AX，下面哪一种描述是正确的？<o:p></o:p></span></span></p>

<p class=a2><span lang=EN-US>A) 均可执行对AX寄存器的“清0”操作，并且执行速度也没差异</span></p>

<p class=a2><span lang=EN-US>B) 均可执行对AX寄存器的“清0”操作，但MOV AX，0指令的执行速度比较快</span></p>

<p class=a2><span lang=EN-US>C) 均可执行对AX寄存器的“清0”操作，但XOR AX，AX指令的执行速度比较快</span></p>

<p class=a2><span lang=EN-US>D) 两条指令的执行结果不同</span></p>

<p class=a1 style='margin-left:21.7pt;text-indent:-21.7pt;mso-list:l7 level1 lfo90'><![if !supportLists]><span
lang=EN-US style='font-family:宋体;mso-bidi-font-family:宋体'><span
style='mso-list:Ignore'>(33)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-family:宋体'>下面的四条指令中，有几条指令执行后不会改变目的操作数？<span lang=EN-US><o:p></o:p></span></span></p>

<p class=a4><span lang=EN-US>SUB<span style='mso-spacerun:yes'>&nbsp; </span>AL，BL<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span>AND<span
style='mso-spacerun:yes'>&nbsp;&nbsp; </span>AL，BL</span></p>

<p class=a4><span lang=EN-US>CMP<span style='mso-spacerun:yes'>&nbsp; </span>AL，BL<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>TEST<span
style='mso-spacerun:yes'>&nbsp;&nbsp; </span>AL，BL</span></p>

<p class=a2><span lang=EN-US>A）1条<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span><span
style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp; </span>B）2条<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span><span
style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp; </span>C）3条<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span><span
style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp; </span>D）4条</span></p>

<p class=a1 style='margin-left:21.7pt;text-indent:-21.7pt;mso-list:l7 level1 lfo90'><![if !supportLists]><span
lang=EN-US style='font-family:宋体;mso-bidi-font-family:宋体'><span
style='mso-list:Ignore'>(34)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-family:宋体'>下面哪一种方法不能使指令<span lang=EN-US>MOV AL，Y正确执行？<o:p></o:p></span></span></p>

<p class=a2><span lang=EN-US>A) X DW<span style='mso-spacerun:yes'>&nbsp;
</span>1234H<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>B)
Y <span style='mso-spacerun:yes'>&nbsp;</span>EQU<span
style='mso-spacerun:yes'>&nbsp;&nbsp; </span>BYTE<span
style='mso-spacerun:yes'>&nbsp; </span></span></p>

<p class=MsoNormal style='text-indent:37.1pt'><span lang=EN-US
style='font-family:宋体'>Y EQU BYTE PTR X<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span
style='mso-tab-count:1'>&nbsp;&nbsp; </span><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span><span style='mso-tab-count:
1'> </span><span style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span>X <span
style='mso-spacerun:yes'>&nbsp;</span>DW<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>1234H<o:p></o:p></span></p>

<p class=a2><span lang=EN-US>C）Y EQU THIS BYTE<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp; </span><span
style='mso-tab-count:3'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>D)
Y <span style='mso-spacerun:yes'>&nbsp;</span>LABEL BYTE</span></p>

<p class=MsoNormal style='text-indent:37.1pt'><span lang=EN-US
style='font-family:宋体'>C DW<span style='mso-spacerun:yes'>&nbsp;
</span>1234H<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span><span style='mso-spacerun:yes'>&nbsp;&nbsp;</span><span
style='mso-spacerun:yes'>&nbsp;</span><span style='mso-tab-count:1'> </span><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span><span style='mso-tab-count:
1'> </span><span style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp;</span>X <span
style='mso-spacerun:yes'>&nbsp;</span>DW<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>1234H<o:p></o:p></span></p>

<p class=a1 style='margin-left:21.7pt;text-indent:-21.7pt;mso-list:l7 level1 lfo90'><![if !supportLists]><span
lang=EN-US style='font-family:宋体;mso-bidi-font-family:宋体'><span
style='mso-list:Ignore'>(35)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-family:宋体'>为避免固态继电器的交流负载端出瞬间尖峰电压导致<span lang=EN-US>SSR失控，通常SSR的输出端并联压敏器件进行保护，试确定这种保护的作用。<o:p></o:p></span></span></p>

<p class=a2><span lang=EN-US>A) 限幅保护 <span style='mso-tab-count:1'>&nbsp;&nbsp;&nbsp; </span>B)
短路保护 <span style='mso-tab-count:1'>&nbsp;&nbsp;&nbsp; </span>C) 过流保护<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span><span style='mso-tab-count:
1'> </span>D) 过热保护</span></p>

<p class=a1 style='margin-left:21.7pt;text-indent:-21.7pt;mso-list:l7 level1 lfo90'><![if !supportLists]><span
lang=EN-US style='font-family:宋体;mso-bidi-font-family:宋体'><span
style='mso-list:Ignore'>(36)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-family:宋体'>常用<span lang=EN-US>K型热电偶传感器的温度测量范围是：<o:p></o:p></span></span></p>

<p class=a2><span lang=EN-US>A) 0℃~982℃ <span style='mso-tab-count:1'>&nbsp;&nbsp; </span>B)
0℃~593℃<span style='mso-spacerun:yes'>&nbsp; </span><span style='mso-tab-count:
1'>&nbsp; </span>C) -184℃~1260℃ D) 0℃~1538℃</span></p>

<p class=a1 style='margin-left:21.7pt;text-indent:-21.7pt;mso-list:l7 level1 lfo90'><![if !supportLists]><span
lang=EN-US style='font-family:宋体;mso-bidi-font-family:宋体'><span
style='mso-list:Ignore'>(37)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-family:宋体'>对于一个未妥善进行屏蔽的计算机测控装置而言，其附近的大容量电动机和变压器的漏磁通最易引发哪种类型的干扰？<span
lang=EN-US><o:p></o:p></span></span></p>

<p class=a2><span lang=EN-US>A）静电耦合干扰Ｂ）信号交叉干扰Ｃ）互感耦合干扰Ｄ）浪涌电压干扰</span></p>

<p class=a1 style='margin-left:21.7pt;text-indent:-21.7pt;mso-list:l7 level1 lfo90'><![if !supportLists]><span
lang=EN-US style='font-family:宋体;mso-bidi-font-family:宋体'><span
style='mso-list:Ignore'>(38)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-family:宋体'>为消除现场采集的信号中混入的工频电压分量，通常令信号通过双积分型模拟<span lang=EN-US>/数字转换器进行转换，试在下列积分时间间隔数据中选择可实现以上要求的数据。<o:p></o:p></span></span></p>

<p class=a2><span lang=EN-US><span style='mso-spacerun:yes'>&nbsp;</span>A）40ms<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span><span style='mso-tab-count:
1'>&nbsp;&nbsp;&nbsp; </span>B) 10ms<span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span><span style='mso-tab-count:
2'>&nbsp;&nbsp;&nbsp;&nbsp; </span>C) 4ms<span style='mso-spacerun:yes'>&nbsp;
</span><span style='mso-spacerun:yes'>&nbsp;&nbsp;</span><span
style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>D) 1ms</span></p>

<p class=a1 style='margin-left:21.7pt;text-indent:-21.7pt;mso-list:l7 level1 lfo90'><![if !supportLists]><span
lang=EN-US style='font-family:宋体;mso-bidi-font-family:宋体'><span
style='mso-list:Ignore'>(39)<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span
style='font-family:宋体'>目前为家庭计算机用户宽带上网所提供的技术是<span lang=EN-US>:<o:p></o:p></span></span></p>

<p class=a2>① 普通电话线加上<span lang=EN-US>MODEM</span></p>

<p class=a2>② 有线电视电缆加上<span lang=EN-US>Cable MODEM</span></p>

<p class=a2>③<span lang=EN-US> ADSL</span></p>

<p class=a2>④ 光纤用户<span lang=EN-US>(FTTH)</span></p>

<p class=a2><span lang=EN-US>A）①和③<span style='mso-spacerun:yes'>&nbsp;&nbsp;
</span><span style='mso-tab-count:1'>&nbsp;&nbsp;&nbsp; </span>B）②和④ <span
style='mso-tab-count:2'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span>C）②、③和④ <span
style='mso-tab-count:1'>&nbsp; </span>D）①</span></p>

<p class=a2><span lang=EN-US><o:p>&nbsp;</o:p></span></p>

<h2 align=center style='margin:0cm;margin-bottom:.0001pt;text-align:center;
line-height:20.0pt;mso-line-height-rule:exactly'><span style='font-size:14.0pt;
mso-bidi-font-size:16.0pt;font-family:华文中宋'>全国计算机等级考试三级<span lang=EN-US>(A)笔试试卷<o:p></o:p></span></span></h2>

<h2 align=center style='margin:0cm;margin-bottom:.0001pt;text-align:center;
line-height:20.0pt;mso-line-height-rule:exactly'><span style='font-size:14.0pt;
mso-bidi-font-size:16.0pt;font-family:华文中宋'>参考答案及评分标准<span lang=EN-US><o:p></o:p></span></span></h2>

<h3 style='margin-top:6.0pt;margin-right:0cm;margin-bottom:0cm;margin-left:
0cm;margin-bottom:.0001pt;line-height:50%'><span style='font-size:11.5pt;
mso-bidi-font-size:16.0pt;line-height:50%;font-family:黑体'>一、选择题（⑴<span
lang=EN-US>-(40)题每题1分，(41)-(55)题每题2分，其70分）<o:p></o:p></span></span></h3>

<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0
 style='margin-left:22.7pt;border-collapse:collapse;mso-padding-alt:0cm 5.4pt 0cm 5.4pt'>
 <tr>
  <td width=82 valign=top style='width:61.25pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal style='margin-left:8.55pt;text-indent:-8.55pt;mso-list:
  l30 level1 lfo84;tab-stops:list 18.0pt'><![if !supportLists]><span
  lang=EN-US style='mso-fareast-font-family:"Times New Roman"'><span
  style='mso-list:Ignore'>(1)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;
  </span></span></span><![endif]><span lang=EN-US>B</span></p>
  </td>
  <td width=82 valign=top style='width:61.3pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal style='margin-left:8.55pt;text-indent:-8.55pt;mso-list:
  l30 level1 lfo84;tab-stops:list 18.0pt'><![if !supportLists]><span
  lang=EN-US style='mso-fareast-font-family:"Times New Roman"'><span
  style='mso-list:Ignore'>(2)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;
  </span></span></span><![endif]><span lang=EN-US>C</span></p>
  </td>
  <td width=82 valign=top style='width:61.25pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal style='margin-left:8.55pt;text-indent:-8.55pt;mso-list:
  l30 level1 lfo84;tab-stops:list 18.0pt'><![if !supportLists]><span
  lang=EN-US style='mso-fareast-font-family:"Times New Roman"'><span
  style='mso-list:Ignore'>(3)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;
  </span></span></span><![endif]><span lang=EN-US>D</span></p>
  </td>
  <td width=82 valign=top style='width:61.3pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal style='margin-left:8.55pt;text-indent:-8.55pt;mso-list:
  l30 level1 lfo84;tab-stops:list 18.0pt'><![if !supportLists]><span
  lang=EN-US style='mso-fareast-font-family:"Times New Roman"'><span
  style='mso-list:Ignore'>(4)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;
  </span></span></span><![endif]><span lang=EN-US>B</span></p>
  </td>
  <td width=52 valign=top style='width:39.3pt;padding:0cm 5.4pt 0cm 5.4pt'>
  <p class=MsoNormal style='margin-left:8.55pt;text-indent:-8.55pt;mso-list:
  l30 level1 lfo84;tab-stops:list 18.0pt'><![if !supportLists]><span
  lang=EN-US style='mso-fareast-font-family:"Times New Roman"'><span
  style='mso-list:Ignore'>(5)<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;
  </span></span></span><![endif]><span lang=EN-US>D</span></p>
  </td>
 </tr>
 <tr>