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<p align="center" class="STYLE2">全国计算机技术与软件专业技术资格(水平)考试 <br>
全真模拟试卷(三)上午试题</p>
<p align="center">(考试时间9∶00～11∶30，共150分钟)</p>
<span class="style1">1.本试卷的试题中共有75个空格，需要全部解答，每个空格1分，满分75分。<br>
2.每个空格对应一个序号，有A、B、C、D四个选项，请选择一个最恰当的选项作为解答。</span><br>
<br>
<p class="style1">●下<span class="style1">面对于冯·诺依曼计算机特点的描述中，<u> (1) </u>是不正确的。 </span></p>
<p class="style1">
(1)
<input type=radio name=tba1 Value = 0 >
A.使用单一处理部件来完成计算、存储及通信工作<br>
<input type=radio name=tba1 Value =0>
B.存储空间的单元是直接寻址的 <br>
<input type=radio name=tba1 Value =0 >
C.计算进行集中的、顺序的控制 <br>
<input type=radio name=tba1 Value = 1>
D.用16进制编码 </p>
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<td width="13%" height="0" valign="top"> <span class="style1">
<input name=tba1 type=text id="tba1" size=10 >
</span></td>
<td width="87%" valign="top"><span class="style1" style="text-align:left;"><img src="images/anniu.gif" width="78" height="22" img style="CURSOR: hand" onClick=DisplayOrHidden(T1)></span>
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<td><p align=left style='text-align:left;'>
<span class="style1"><span class="style1"><SPAN id=T1 style="BORDER-RIGHT: #ffffff 1px solid; BORDER-TOP: #ffffff 1px solid; DISPLAY: none; BORDER-LEFT: #ffffff 1px solid; COLOR: black; BORDER-BOTTOM: #ffffff 1px solid; FONT-FAMILY: 宋体"><span class="STYLE1" style="font-family: 宋体"><strong> </strong></span>【解析】本题考查冯·诺依曼计算机这个知识点，是计算机系统中最基本的知识，一定要牢固掌握。 <br>
存储程序计算机最早是由著名数学家冯·诺依曼等人在1946年总结并明确提出来的，因此又被称为冯·诺依曼计算机。存储程序计算机在体系结构上的主要特点如下。 <br>
机器以运算器为中心；采用存储程序原理；存储器是按地址访问的、线性编址的空间；控制流由指令流产生；指令由操作码和地址码组成；数据以二进制编码表示，采用二进制运算。 </p></td>
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<p class="style1">●CPU包括<u> (2) </u>。 </p>
<p class="style1">(2)
<input type=radio name=tba2 Value = 1>
A.运算器和控制器<br>
<input type=radio name=tba2 Value = 0 >
B.累加器和控制器<br>
<input type=radio name=tba2 Value = 0 >
C.运算器和寄存器组<br>
<input type=radio name=tba2 Value = 0 >
D.运算和控制系统</p>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
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<td width="13%" valign="top"> <span class="style1">
<input name=tba2 type=text id="tba2" size=10 >
</span></td>
<td width="87%" valign="top"><span class="style1" style="text-align:left;"><img src="images/anniu.gif" width="78" height="22" img style="CURSOR: hand" onClick=DisplayOrHidden(T2)></span>
<table width="96%" border="0">
<tr>
<td><p align=left style='text-align:left;'>
<span class="style1"><span class="style1"><SPAN id=T2 style="BORDER-RIGHT: #ffffff 1px solid; BORDER-TOP: #ffffff 1px solid; DISPLAY: none; BORDER-LEFT: #ffffff 1px solid; COLOR: black; BORDER-BOTTOM: #ffffff 1px solid; FONT-FAMILY: 宋体"><span class="STYLE1" style="font-family: 宋体"><strong> </strong></span>【解析】中央处理器简称CPU，由运算器和控制器组成。 </span></span>
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<p class="style1">●单个磁头在向盘片的磁性涂层上写入数据时，是以<u> (3) </u>方式写入的。 </p>
<p class="style1">
(3)
<input type=radio name=tba3 Value = 0 >
A.并行<br>
<input type=radio name=tba3 Value = 0 >
B.并－串行<br>
<input type=radio name=tba3 Value = 1 >
C.串行<br>
<input type=radio name=tba3 Value = 0 >
D.串－并行</p>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="13%" valign="top"> <span class="style1">
<input name=tba3 type=text id="tba3" size=10 >
</span></td>
<td width="87%" valign="top"><span class="style1" style="text-align:left;"><img src="images/anniu.gif" width="78" height="22" img style="CURSOR: hand" onClick=DisplayOrHidden(T3)></span>
<table width="96%" border="0">
<tr>
<td class="style1"><SPAN id=T3 style="BORDER-RIGHT: #ffffff 1px solid; BORDER-TOP: #ffffff 1px solid; DISPLAY: none; BORDER-LEFT: #ffffff 1px solid; COLOR: black; BORDER-BOTTOM: #ffffff 1px solid; FONT-FAMILY: 宋体"><span class="STYLE1" style="font-family: 宋体"><strong> </strong></span><span class="style1">【解析】本题考查的是磁盘的工作原理，因为是单磁头，故是串行写入的。 </td>
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<p class="style1">●采用精简指令系统的目的是<u> (4) </u>。 </p>
<P CLASS=style1>(4)
<input type=radio name=tba4 Value = 0 >
A.提高计算机功能 <br>
<input type=radio name=tba4 Value = 0 >
B.增加字长<br>
<input type=radio name=tba4 Value = 0>
C.提高内存利用率<br>
<input type=radio name=tba4 Value = 1 >
D.提高计算机速度</P>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="13%" valign="top"> <span class="style1">
<input name=tba4 type=text id="tba4" size=10 >
</span></td>
<td width="87%" valign="top"><span class="style1" style="text-align:left;"><img src="images/anniu.gif" width="78" height="22" img style="CURSOR: hand" onClick=DisplayOrHidden(T4)></span>
<table width="96%" border="0">
<tr>
<td class="style1"><SPAN id=T4 style="BORDER-RIGHT: #ffffff 1px solid; BORDER-TOP: #ffffff 1px solid; DISPLAY: none; BORDER-LEFT: #ffffff 1px solid; COLOR: black; BORDER-BOTTOM: #ffffff 1px solid; FONT-FAMILY: 宋体"><span class="STYLE1" style="font-family: 宋体"><strong> </strong></span>【解析】精简指令系统计算机通过减少不常用指令、指令长度固定等措施提高了计算机运行速度。</td>
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