【单选题】【消耗次数：1】
商标国际分类共有（）大类
①
A42
②
B43
③
C44
④
D45
参考答案：
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相关题目
【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/191157384C9878B0EA0A6D44E43D4584.png title=12.png alt=12.png/>
①
正确
②
错误
【单选题】
设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则交关系A∩B等于：
①
{1,21,32,43,34,2
②
{2,4
③
{1,21,33,34,2
④
{1,23,3}.
【单选题】
设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则并关系A∪B等于：
①
{1,21,32,43,34,2
②
{2,4
③
{1,21,33,34,2
④
{1,23,3}.
【单选题】
设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则差关系A-B等于：
①
{1,21,32,43,34,2
②
{2,4
③
{1,21,33,34,2
④
{1,23,3}.
【单选题】
设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则对称差关系A⊕B等于：
①
{1,21,32,43,34,2
②
{2,4
③
{1,21,33,34,2
④
{1,23,3}.
【判断题】
<img src=https://huaweicloudobs.ahjxjy.cn/43B96564741576D75259A8D81EC42B2F.png title=36.png alt=36.png/>
①
正确
②
错误
【单选题】
<imgsrc="http://121.251.253.213/doc/a@C698C4ADC93D93531381824327A9FF44.png/download?time=636002474470581793&token=0B9B3D8B57AE0E63ECE153E923BCE509&filename=png"data-url="doc/a@C698C4ADC93D93531381824327A9FF44.png"data-preview_url_ueditor="doc/a@C698C4ADC93D93531381824327A9FF44.png"/>
①
<imgsrc="http://121.251.253.213/doc/a@CF33E559A85423D5CAB6EDCFECDC1DC7.png/download?time=636002474556069944&token=1F73253CE0DBDE683628F12C5F4D8450&filename=png"data-url="doc/a@CF33E559A85423D5CAB6EDCFECDC1DC7.png"data-preview_url_ueditor="doc/a@CF33E559A85423D5CAB6EDCFECDC1DC7.png"/>
②
<imgsrc="http://121.251.253.213/doc/a@60A71C811B81029FBF602DFB3E611403.png/download?time=636002474654194116&token=D3D19601DFC12A813BAA15BE2BFEF530&filename=png"data-url="doc/a@60A71C811B81029FBF602DFB3E611403.png"data-preview_url_ueditor="doc/a@60A71C811B81029FBF602DFB3E611403.png"/>
③
<imgsrc="http://121.251.253.213/doc/a@1CC11FD18C5106A0703556B59DF43E87.png/download?time=636002474737810263&token=CC4793C07577F75B877ADA52A41C1E24&filename=png"data-url="doc/a@1CC11FD18C5106A0703556B59DF43E87.png"data-preview_url_ueditor="doc/a@1CC11FD18C5106A0703556B59DF43E87.png"/>
④
<imgsrc="http://121.251.253.213/doc/a@147CD7754712A48704A0454D88895623.png/download?time=636002474844982451&token=3081AFA389E2249745935FD3A4A33759&filename=png"data-url="doc/a@147CD7754712A48704A0454D88895623.png"data-preview_url_ueditor="doc/a@147CD7754712A48704A0454D88895623.png"/>
【单选题】
设 A = {1, 22, 43, 3}，B = {1, 32, 44, 2}，则交关系A∩B的值域ran(A∩B)等于：
①
{1,2};
②
{2,4};
③
{2};
④
{4}.
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/9DB02A6AD21CE86B6F534F3D5339CA0C.jpg title=43-D.jpg alt=43-D.jpg/>
①
<img src=https://huaweicloudobs.ahjxjy.cn/D83718AE661E8074BB396B794A296990.jpg title=43-1.jpg alt=43-1.jpg/>
②
<img src=https://huaweicloudobs.ahjxjy.cn/D01C112AE32810058B923363F785A14F.jpg title=43-2.jpg alt=43-2.jpg/>
③
<img src=https://huaweicloudobs.ahjxjy.cn/7D42B734C8649D2981D1A1F0CFA4FBFD.jpg title=43-3.jpg alt=43-3.jpg/>
④
<img src=https://huaweicloudobs.ahjxjy.cn/54E09B6A9A4A326A406B9BDB592A2DAB.jpg title=43-4.jpg alt=43-4.jpg/>
【单选题】
<img src=https://huaweicloudobs.ahjxjy.cn/53F42B475349C2ADA6363CED00E2F594.png title=44.png alt=44.png/>
①
1
②
2
③
3
④
4
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