【单选题】【消耗次数：1】
在收益一定的情况下，标准离差率越大的方案，其风险（ ）
①
越大
②
越小
③
二者无关
④
无法判断
参考答案：
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随机题目
【单选题】
逻辑项<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj04.files/szlj043806.png">的相邻项是______。
①
<imgwidth="62"height="24"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj04.files/szlj043847.png">
②
<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj04.files/szlj043876.png">
③
<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj04.files/szlj043905.png">
④
<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj04.files/szlj043934.png">
【单选题】
根据等效关系的传递性，若有状态<imgwidth="24"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056978.png">和<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057002.png">等效，又有状态<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057032.png">和<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057056.png">等效，则状态<imgwidth="24"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057085.png">和<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057109.png">也等效。正确的写法是：______。
①
(<imgwidth="24"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057153.png">,<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057177.png">),(<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057203.png">,<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057227.png">)-à(<imgwidth="50"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057254.png">)
②
(<imgwidth="50"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057281.png">),(<imgwidth="54"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057307.png">)-à(<imgwidth="50"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057334.png">)
③
(<imgwidth="24"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057361.png">,<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057385.png">),(<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057411.png">,<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057435.png">)-à(<imgwidth="24"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057462.png">,<imgwidth="25"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057486.png">)
④
(<imgwidth="50"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057513.png">),(<imgwidth="54"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057539.png">)-à(<imgwidth="54"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj057566.png">)
【单选题】
描述逻辑电路的真值表见表所示，则其逻辑表达式F=______。<imgwidth="595"height="147"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013324.png">
①
<imgwidth="89"height="33"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013327.png">
②
<imgwidth="79"height="37"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013330.png">
③
<imgwidth="52"height="27"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013333.png">
④
<imgwidth="58"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013336.png">
【单选题】
n变量的逻辑函数，<imgwidth="25"height="30"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj051919.png">为最小项，则有<imgwidth="52"height="60"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj051949.png">=______。
①
0
②
1
③
m
④
n
【单选题】
已知F(A,B,C)=A+BC，则F的最小项之和的形式为______。
①
Σm(3,4,5,6,7)
②
<imgwidth="54"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj055986.png">(0,1,2)
③
Σm(0,1,2)
④
<imgwidth="54"height="34"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056029.png">(3,4,5,6,7)
【单选题】
在下图所示电路中，电路______的输出不为高电平。
①
<imgwidth="100"height="45"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056501.png">
②
<imgwidth="123"height="45"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056504.png">
③
<imgwidth="112"height="48"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056507.png">
④
<imgwidth="124"height="59"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj05.files/szlj056510.png">
【单选题】
下列逻辑函数中，与<imgwidth="47"height="19"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026247.png">相等的是______。
①
<imgwidth="77"height="27"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026262.png">
②
<imgwidth="87"height="24"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026265.png">
③
<imgwidth="68"height="27"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026268.png">
④
<imgwidth="79"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj02.files/szlj026271.png">
【单选题】
逻辑项<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103931.png">的相邻项是______。
①
<imgwidth="63"height="23"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103947.png">
②
<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103975.png">
③
<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj104004.png">
④
<imgwidth="62"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj104033.png">
【单选题】
描述逻辑电路的真值表见下表所示，则其逻辑表达式F=______。<imgwidth="594"height="142"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103354.png">
①
<imgwidth="77"height="27"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103382.png">
②
<imgwidth="79"height="27"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103411.png">
③
<imgwidth="52"height="22"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103440.png">
④
<imgwidth="52"height="27"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj10.files/szlj103469.png">
【单选题】
逻辑项<imgwidth="57"height="29"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013770.png">的相邻项是______。
①
<imgwidth="63"height="30"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013785.png">
②
<imgwidth="63"height="23"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013788.png">
③
<imgwidth="67"height="27"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013791.png">
④
<imgwidth="64"height="30"src="http://wljy.whut.edu.cn:80/uploadfiles/word/szlj01.files/szlj013794.png">