设A ={1，3，5，7}，B = {5, 7, 9，11}，则A∪B是（）

【填空题】

<img src="http://huaweicloudobs.ahjxjy.cn/9310a239b7b7ea83e2edd1b5c0849b2c.png"/>[填空1]

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【单选题】

① <img title=9-1.jpg alt=9-1.jpg src=https://huaweicloudobs.ahjxjy.cn/A506508B7D4B1301949069CEF073B997.jpg/>

② <img title=9-2.jpg alt=9-2.jpg src=https://huaweicloudobs.ahjxjy.cn/1598D265A269A52C2138FA2557296077.jpg/>

③ <img title=9-3.jpg alt=9-3.jpg src=https://huaweicloudobs.ahjxjy.cn/C81FDF39B48C0B88D599DEC9C063DAAE.jpg/>

④ <img title=9-4.jpg alt=9-4.jpg src=https://huaweicloudobs.ahjxjy.cn/ABC198F9282C0CE2A29ACBB0D6622606.jpg/>

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【单选题】

<imgdata-url="doc/a@6DB4CF5F9C66FD17BC71BB963B29A7B4.png"data-preview_url_ueditor="doc/a@6DB4CF5F9C66FD17BC71BB963B29A7B4.png"src="http://121.251.253.213/doc/a@6DB4CF5F9C66FD17BC71BB963B29A7B4.png/download?time=635997628381662088&token=1C6275C21B6D06966B67391CC3F19CC3&filename=png"/>

① <imgdata-url="doc/a@F410046D7922BA32E1663874BC2B5C36.png"data-preview_url_ueditor="doc/a@F410046D7922BA32E1663874BC2B5C36.png"src="http://121.251.253.213/doc/a@F410046D7922BA32E1663874BC2B5C36.png/download?time=635997628596318465&token=777D59C04A7A8D783EA1471DFB89335B&filename=png"/>

② <imgdata-url="doc/a@1AF2C5AB025EC26732409D751F8DD5F6.png"data-preview_url_ueditor="doc/a@1AF2C5AB025EC26732409D751F8DD5F6.png"src="http://121.251.253.213/doc/a@1AF2C5AB025EC26732409D751F8DD5F6.png/download?time=635997628730166700&token=3FB693A96149E486567C840289970469&filename=png"/>

③ <imgdata-url="doc/a@1CA14D32B72BD4002480622B3B6819F1.png"data-preview_url_ueditor="doc/a@1CA14D32B72BD4002480622B3B6819F1.png"src="http://121.251.253.213/doc/a@1CA14D32B72BD4002480622B3B6819F1.png/download?time=635997628831410878&token=E8904182AEE541F27BF648C05282E255&filename=png"/>

④ <imgdata-url="doc/a@CEF42F04E29737B84007F47A8DE4CF5D.png"data-preview_url_ueditor="doc/a@CEF42F04E29737B84007F47A8DE4CF5D.png"src="http://121.251.253.213/doc/a@CEF42F04E29737B84007F47A8DE4CF5D.png/download?time=635997628964479112&token=CF20CB3A5FB1F69385D3E2366AC1E712&filename=png"/>

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【单选题】

向量空间<imgwidth="216"height="28"src="data:image/png;base64,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"/>的维数等于（）

① 0

② 1

③ 2

④ 3

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【判断题】

① 正确

② 错误

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【单选题】

设a=5，b=6，c=7，d=8，则执行下列语句后，x的值为：______。 x= IIF((a>b) And (c<d),10,20)

① 300

② 20

③ 30

④ 10

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【单选题】

已知：inta[][3]={1,2,3,4,5,6,7,8,9,0};则数组a的第一维的大小是（）

① 2

② 3

③ 4

④ 无法确定；

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【单选题】

设函数<img src=https://huaweicloudobs.ahjxjy.cn/88A075DC22F70199C36592178CA1791D.png title=B([11N%3U@~{5EC{9N922`9.png alt=B([11N%3U@~{5EC{9N922`9.png/>，则该函数是（）

① 奇函数

② 偶函数

③ 非奇非偶函数

④ 既是奇函数又是偶函数

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【单选题】

① <img src=https://huaweicloudobs.ahjxjy.cn/D0ED682F2430EC298088881269230BFB.jpg title=7-1.jpg alt=7-1.jpg/>

② <img src=https://huaweicloudobs.ahjxjy.cn/B46D9212C069D0BBFD04C780DEC471C7.jpg title=7-2.jpg alt=7-2.jpg/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/220A926C7B32A702D2D7A4ACBC7F240B.jpg title=7-3.jpg alt=7-3.jpg/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/BDA8EB56FA572C00074FAFEDFE3A45D7.jpg title=7-4.jpg alt=7-4.jpg/>

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【单选题】

设<img src=https://huaweicloudobs.ahjxjy.cn/1B242558282FC0BE07D3CD9B08DCB04D.png title=D27QOM_WH$B7KF7S)8EHWKC.png alt=D27QOM_WH$B7KF7S)8EHWKC.png/>

① <img src=https://huaweicloudobs.ahjxjy.cn/8F45CB12C445CAF4637532022009C337.png title=]GCJ8XN(HZ]`~[{4ISQ6Z`M.png alt=]GCJ8XN(HZ]`~[{4ISQ6Z`M.png/>

② <img src=https://huaweicloudobs.ahjxjy.cn/3F6986AD52856A8A194A87CE5EC2D2D4.png title=~CII3M)8B@$A7BU9((6W%5Q.png alt=~CII3M)8B@$A7BU9((6W%5Q.png/>

③ <img src=https://huaweicloudobs.ahjxjy.cn/E5EE08E7E7426C7DD2A94E206FD65B26.png title=0A2~FE)@17QM8%RBT1CWSXQ.png alt=0A2~FE)@17QM8%RBT1CWSXQ.png/>

④ <img src=https://huaweicloudobs.ahjxjy.cn/2A8DBDF8078990A841E23CB8F3F0DA81.png title=3}FK29B[]L{65OVDP1DRBY6.png alt=3}FK29B[]L{65OVDP1DRBY6.png/>

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