1/5单选题
难度：
1.集合
用区间表示为（ ）
用区间表示为（ ） | A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- IOW9k+espuWPt+aYr+KAnDxpbWcgd2lkdGg9MTAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNjIvNkUvckJBQ0UxU2c2RkxUYWl5UkFBQUE1bEMzM0JzNjMwLnBuZyI+4oCd77yM5Yy66Ze055qE5bem56uv55So4oCcPGltZyB3aWR0aD0yMiBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC84Ri8wMy9yQkFDRkZTZzZGTGgySURHQUFBQk5DQzdmWGM5NDMucG5nIj7igJ3mnaXooajnpLrvvIw=
- 提示2：
- IOacieetieS6juWPt+eahOS4gOerr+imgeeUqOmXreWMuumXtA==
正确答案：RA==
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
2/5单选题
难度：
2.集合
| A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- IOW9k+espuWPt+aYr+KAnDxpbWcgd2lkdGg9MTAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvNjIvNkUvckJBQ0UxU2c2RnZRT1ZvaUFBQUE1eFRHNldvNTc2LnBuZyI+4oCd77yM5Yy66Ze05Y+z56uv55So4oCcPGltZyB3aWR0aD0yMiBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yRS83MC9yQkFDSmxTZzZGdlJGRmpkQUFBQlFRTUphVU0wODAucG5nIj7igJ3mnaXooajnpLo=
- 提示2：
- IOacieetieWPt+eahOS4gOerr+eUqOmXreWMuumXtA==
- 提示3：
- IOmbhuWQiOS4reeahOKAnOaIluKAneWcqOWMuumXtOS4reeUqOW5tumbhuespuWPt+KAnDxpbWcgd2lkdGg9MTAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMkUvQUUvckJBQ0oxU2c2RnVBbjBwekFBQUE3RG5IOWlNMDY5LnBuZyI+4oCd6KGo56S6
正确答案：Qw==
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
3/5单选题
难度：
3.下列各组函数中相等的是（ ）
| A |  ， |
| B |  ， |
| C |  ， |
| D |  ， |
- 提示1：
- 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
- 提示2：
- 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
- 提示3：
- IETpgInpobnvvIw8aW1nIHdpZHRoPTIzMyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yRS83MC9yQkFDSmxTZzZGX3dSbjFqQUFBRDRPT2pKenM1MDYucG5nIj7vvIw8aW1nIHdpZHRoPTE2OSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8yRS9BRS9yQkFDSjFTZzZGX1EzQWQzQUFBRE45VC1MN1k1NTQucG5nIj4=
正确答案：Qw==
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
4/5单选题
难度：
4.下列函数中与函数
相等的是（ ）
相等的是（ ） | A |  |
| B |  |
| C |  |
| D |  |
- 提示1：
- IEHpgInpobnvvIw8aW1nIHdpZHRoPTI4IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzYyLzZFL3JCQUNFMVNnNkZfUW1KNlJBQUFCbDdkY182azU2Ny5wbmciPueahOWumuS5ieWfn+aYrzxpbWcgd2lkdGg9NTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMkUvQUUvckJBQ0oxU2c2Ri13Uk1Dd0FBQUIxWVJiZTdFNjIwLnBuZyI+
- 提示2：
- IELpgInpobnvvIw8aW1nIHdpZHRoPTc0IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzhGLzAzL3JCQUNGRlNnNkdLVDAyQU1BQUFCNlVNUW9kazY3My5wbmciPg==
- 提示3：
- IEPpgInpobnvvIw8aW1nIHdpZHRoPTMxIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzhGLzAzL3JCQUNGRlNnNkdLQzB2UWxBQUFCbTNxNktsTTIzMC5wbmciPueahOWumuS5ieWfn+aYrzxpbWcgd2lkdGg9NTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMkUvNzAvckJBQ0psU2c2R0tCMnRtdUFBQUJ5M0VNMmpZNzI3LnBuZyI+77yM
正确答案：RA==
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
5/5单选题
难度：
5.下列各组函数表示相等函数的是（ ）
| A |  |
| B |  |
| C |  ， |
| D |  |
- 提示1：
- 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
- 提示2：
- IDxpbWcgd2lkdGg9MzU1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzhGLzAzL3JCQUNGRlNnNkdXZ0l0YmNBQUFFVDJMR3Y5QTU5My5wbmciPg==
- 提示3：
- 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
正确答案：RA==
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