《数字逻辑(专科)》武汉理工大学20春作业一
数字逻辑(专科)-作业一1.[多选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">逻辑项AB</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="35" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj11.files/szlj113155.png"></span>的相邻项有______。<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
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A.ABCD
B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="60" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj11.files/szlj113198.png"></span> <o:p></o:p>
C.<p class="MsoNormal" style="display:inline;"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">AB</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="37" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj11.files/szlj113225.png"></span> <o:p></o:p>
D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj11.files/szlj113250.png"></span> <o:p></o:p>
正确答案:——AC——
2.[多选题] 两输入与非门输出为0时,输入应满足______。
A.两个同时为1
B.两个同时为0
C.两个互为相反
D.两个中至少有一个为0
正确答案:——A——
3.[判断题] 若(A,B)为相容状态时,(B,C)也为相容状态对,则(A,B,C,)构成一个相容类。( )
A.正确
B.错误
正确答案:——B——
4.[判断题] 一个74LS00芯片可以构成一个或门。
A.正确
B.错误
正确答案:————
5.[判断题] 米里型电路状态表的读法是,处于状态y的同步时序电路,输出为Z;当输入为x时,在时钟脉冲作用下,电路进入次态 。( )
A.正确
B.错误
正确答案:————
6.[单选题] 3变量逻辑函数有______个最大项。
A.2
B.4
C.8
D.16
正确答案:————
7.[单选题] 数字系统中,采用______可以将减法运算转化为加法运算。
A.原码
B.补码
C.Gray码
D.反码
正确答案:————
8.[单选题] 实现两个4位二进制数相乘的组合电路,应有______输出函数。
A.4
B.8
C.10
D.12
正确答案:————
9.[单选题] 在情况______下,与非门的输出结果是逻辑0。
A.输入全部为0
B.输入至少有一个0
C.输入仅有一个0
D.输入全部为1
正确答案:————
10.[单选题] N个触发器可以构成最大计数长度(进制数)为______的计数器。
A.N
B.2N
C.N2
D.2N
正确答案:————
11.[单选题] 二进制小数-0.0110的补码表示为______。
A.0.1010
B.1.1001
C.1.0110
D.1.1010
正确答案:————
12.[单选题] 要使与非门的输出为0,输入应满足______。
A. 全为0
B. 全为1
C. 至少一个为1
D. 至少一个为0
正确答案:————
13.[单选题] 在情况______下,与非门的输出结果是逻辑0。
A.输入全部为0
B.输入至少有一个0
C.输入仅有一个0
D.输入全部为1
正确答案:————
14.[单选题] 下列电路中,属于时序逻辑电路的是______。
A.编码器
B.半加器
C.寄存器
D.译码器
正确答案:————
15.[单选题] <p class="MsoNormal" style="margin-left:21.0000pt;text-indent:-21.0000pt;mso-char-indent-count:-2.0000;"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">在下图所示的三态门电路中,使能控制端 I</span><sub><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;vertical-align:sub;">A</span></sub><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">、I</span><sub><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;vertical-align:sub;">B</span></sub><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">______不能保证该电路正常工作。</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
<p class="MsoNormal" align="center" style="margin-left:21.0000pt;text-indent:-21.0000pt;mso-char-indent-count:-2.0000;text-align:center;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="235" height="168" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj034750.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
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A.IA=0,IB=0
B.IA=0,IB=1
C.IA=1,IB=0
D.IA=1,IB=1
正确答案:————
16.[单选题] 3变量逻辑函数有______个最小项。
A.2
B.4
C.8
D.16
正确答案:————
17.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">根据给定的真值表判断F表示的门电路为:______</span><span style="font-family:Microsoft Yahei;letter-spacing:1.5000pt;font-size:10.5000pt;mso-font-kerning:1.0000pt;">。</span><span style="font-family:Microsoft Yahei;letter-spacing:1.5000pt;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
<p class="MsoNormal" align="center" style="text-align:center;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="184" height="122" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj054901.png"></span><span style="font-family:Microsoft Yahei;letter-spacing:1.5000pt;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
A.与门
B.或门
C.与非门
D.或非门
正确答案:————
18.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">逻辑项</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj034146.png"></span>的相邻项是______。<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
A.<p class="p" align="justify" style="margin-top:0.0000pt;margin-bottom:0.0000pt;text-align:justify;text-justify:inter-ideograph;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="24" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj034187.png"></span> <o:p></o:p>
B.<p class="p" align="justify" style="margin-top:0.0000pt;margin-bottom:0.0000pt;text-align:justify;text-justify:inter-ideograph;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj034216.png"></span> <o:p></o:p>
C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj034245.png"></span> <o:p></o:p>
D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="62" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj03.files/szlj034274.png"></span> <o:p></o:p>
正确答案:————
19.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">下列电路中,实现逻辑功能</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="70" height="30" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026736.png"></span>的是______。<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="289" height="155" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026749.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="287" height="155" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026752.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="304" height="134" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026755.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="282" height="135" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026758.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
正确答案:————
20.[单选题] 下列触发器中,没有约束条件的是______。
A.基本RS触发器
B.边沿D触发器
C.同步RS触发器
D.主从RS触发器
正确答案:————
21.[单选题] 3变量逻辑函数有______个最小项。
A.2
B.4
C.8
D.16
正确答案:————
22.[单选题] 一位8421BCD码计数器至少需要______个触发器。
A.3
B.4
C.5
D.10
正确答案:————
23.[单选题] 下列触发器中______具有约束条件。
A.RS触发器
B.D触发器
C.JK触发器
D.T触发器
正确答案:————
24.[单选题] 下列逻辑功能器件中______是译码器。
A.74LS00
B.74LS48
C.74LS138
D.74LS151
正确答案:————
25.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">下列逻辑函数中,与</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="47" height="19" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026247.png"></span>相等的是______。<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="77" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026262.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="87" height="24" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026265.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="68" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026268.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="79" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026271.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
正确答案:————
26.[单选题] 在情况______下,与非门的输出结果是逻辑0。
A.输入全部为0
B.输入至少有一个0
C.输入仅有一个0
D.输入全部为1
正确答案:————
27.[单选题] 构成时序逻辑电路的基本单元最______。
A.编码器
B.数据选择器
C.数值比较器
D.触发器
正确答案:————
28.[单选题] 下列逻辑功能器件中______是译码器。
A.74LS00
B.74LS48
C.74LS138
D.74LS151
正确答案:————
29.[单选题] 已知奇校验位P的值是1,下列的ASCII码哪个符合条件:______。
A.P1010100
B.P1000010
C.P0100000
D.P0110001
正确答案:————
30.[单选题] 构成时序逻辑电路的基本单元最______。
A.编码器
B.数据选择器
C.数值比较器
D.触发器
正确答案:————
31.[单选题] <p class="MsoNormal" style="margin-left:21.0000pt;text-indent:-21.0000pt;mso-char-indent-count:-2.0000;"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">描述逻辑电路的真值表见表所示,则其逻辑表达式F=______。</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
<p class="MsoNormal" align="center" style="margin-left:21.0000pt;text-indent:-21.0000pt;mso-char-indent-count:-2.0000;text-align:center;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="590" height="138" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023817.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="85" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023820.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="89" height="33" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023823.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="53" height="28" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023826.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="64" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj023829.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
正确答案:————
32.[单选题] 一个16位的二进制整数,用十进制数表示至少要______位。
A.4
B.6
C.5
D.7
正确答案:————
33.[单选题] 已知F(A,B,C) = A + BC,则F的最小项之和的形式为______。
A.Σm(3,4,5,6,7)
B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="54" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj055986.png"></span>(0,1,2)<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
C.Σm(0,1,2)
D.<p class="MsoNormal" style="margin-left:10.5000pt;text-indent:-10.5000pt;mso-char-indent-count:-1.0000;line-height:150%;" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="54" height="34" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056029.png"></span>(3,4,5,6,7)<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
正确答案:————
34.[单选题] 在下列逻辑部件中,不属于组合逻辑部件的是______。
A.译码器
B.编码器
C.全加器
D.寄存器
正确答案:————
35.[单选题] <p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">n变量的逻辑函数,</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="25" height="30" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj04.files/szlj044884.png"></span>为最小项,则有<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="52" height="60" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj04.files/szlj044914.png"></span>=______。<span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
A.0
B.1
C.m
D.n
正确答案:————
36.[单选题] 在下图所示电路中,电路______的输出不为高电平。
A.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="100" height="45" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056501.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
B.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="123" height="45" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056504.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
C.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="112" height="48" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056507.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
D.<p class="MsoNormal" style="display:inline;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="124" height="59" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056510.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
正确答案:————
37.[单选题] 3变量逻辑函数有______个最小项。
A.2
B.4
C.8
D.16
正确答案:————
38.[单选题] 下列逻辑功能器件中______是译码器。
A.74LS00
B.74LS48
C.74LS138
D.74LS151
正确答案:————
39.[单选题] 构成时序逻辑电路的基本单元是______。
A.编码器
B.数据选择器
C.数值比较器
D.触发器
正确答案:————
40.[单选题] <p class="17"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">描述逻辑电路的真值表见表所示,则其逻辑表达式F=______。</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p></o:p></span>
<p class="17" align="center" style="text-align:center;"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="595" height="147" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013324.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
A.<p class="17"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="89" height="33" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013327.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
B.<p class="17"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="79" height="37" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013330.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
C.<p class="17"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="52" height="27" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013333.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
D.<p class="17"><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><img width="58" height="29" src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013336.png"></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"><o:p> </o:p></span>
正确答案:————
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