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+KAnDxpbWcgd2lkdGg9MTAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvNTAvckJBQ0UxUHRwcDJnMHNkTEFBQUE1bEMzM0JzNjM1LnBuZyI+4oCd77yM5Yy66Ze055qE5bem56uv55So4oCcPGltZyB3aWR0aD0yMiBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9DRi81MC9yQkFDRTFQdHBwMmlhYjNyQUFBQk5EX1lXd0EwOTYucG5nIj7igJ3mnaXooajnpLrvvIw=
- 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+KAnDxpbWcgd2lkdGg9MTAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvNTAvckJBQ0UxUHRwcWJ4U3UxSEFBQUE1MFVnLXowMDE5LnBuZyI+4oCd77yM5Yy66Ze05Y+z56uv55So4oCcPGltZyB3aWR0aD0yMiBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC85Ny9GRS9yQkFDRkZQdHBxYXo0TnZIQUFBQlFYNkpfdDg0MTIucG5nIj7igJ3mnaXooajnpLo=
- 提示2：
- IOacieetieWPt+eahOS4gOerr+eUqOmXreWMuumXtA==
- 提示3：
- IOmbhuWQiOS4reeahOKAnOaIluKAneWcqOWMuumXtOS4reeUqOW5tumbhuespuWPt+KAnDxpbWcgd2lkdGg9MTAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvOTcvRkUvckJBQ0ZGUHRwcWJ3dmtFQ0FBQUE3R3lGS1BzMTUxLnBuZyI+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：
- IETpgInpobnvvIw8aW1nIHdpZHRoPTIzMyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9DRi81MC9yQkFDRTFQdHBySFNvUDFVQUFBRDRPT2pKenMwOTEucG5nIj7vvIw8aW1nIHdpZHRoPTE2OSBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC85Ny9GRS9yQkFDRkZQdHByR0FvZ3VUQUFBRE53T3lnYTQ4NzcucG5nIj4=
正确答案：Qw==
6Kej5p6Q77yaQemAiemhue+8jDxpbWcgd2lkdGg9MjggaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvNTAvckJBQ0UxUHRwckRSSEl2YkFBQUJpXzhFd0RjNDEyLnBuZyI+55qE5a6a5LmJ5Z+f5pivPGltZyB3aWR0aD01NyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9DRi81MC9yQkFDRTFQdHByQ0JuNlJuQUFBQjFZUmJlN0UwNTMucG5nIj7vvIw8aW1nIHdpZHRoPTI4IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzk3L0ZFL3JCQUNGRlB0cHJIeGhLUzVBQUFCbDB3UEktdzEwOC5wbmciPueahOWumuS5ieWfn+aYrzxpbWcgd2lkdGg9NTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvNTAvckJBQ0UxUHRwckdDZWpkMUFBQUIydXZGaFZBMTk3LnBuZyI+77yM5omA5LulPGltZyB3aWR0aD03NCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC85Ny9GRS9yQkFDRkZQdHByR2laWDY1QUFBQ0R4ZEpLV3c4MjkucG5nIj7vvJtC6YCJ6aG577yMPGltZyB3aWR0aD0yMTAgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvNTAvckJBQ0UxUHRwckh4TnJHOUFBQUNfMmxCYmNRNjY4LnBuZyI+77yM5Y2zPGltZyB3aWR0aD0yOCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9DRi81MC9yQkFDRTFQdHByRFJISXZiQUFBQmlfOEV3RGM0MTIucG5nIj7nmoTlrprkuYnln5/mmK88aW1nIHdpZHRoPTU3IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0NGLzUwL3JCQUNFMVB0cHJIQ25scGJBQUFCeF9NakJXVTMyMy5wbmciPu+8jDxpbWcgd2lkdGg9MjI0IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwL0NGLzUwL3JCQUNFMVB0cHJIaTA5Q3RBQUFET0lWdDVrbzE4NS5wbmciPu+8jOWNszxpbWcgd2lkdGg9MjggaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvOTcvRkUvckJBQ0ZGUHRwckh4aEtTNUFBQUJsMHdQSS13MTA4LnBuZyI+55qE5a6a5LmJ5Z+f5pivPGltZyB3aWR0aD0xMTkgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvOTcvRkUvckJBQ0ZGUHRwckdTZlVrbEFBQUNnbS1YQUZZODQyLnBuZyI+77yM5omA5LulPGltZyB3aWR0aD03NCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC85Ny9GRS9yQkFDRkZQdHByR2laWDY1QUFBQ0R4ZEpLV3c4MjkucG5nIj7vvJtD6YCJ6aG577yMPGltZyB3aWR0aD0yOCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC9DRi81MC9yQkFDRTFQdHByRFJISXZiQUFBQmlfOEV3RGM0MTIucG5nIj7kuI48aW1nIHdpZHRoPTI4IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzk3L0ZFL3JCQUNGRlB0cHJIeGhLUzVBQUFCbDB3UEktdzEwOC5wbmciPueahOWumuS5ieWfn+aYrzxpbWcgd2lkdGg9NTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvNTAvckJBQ0UxUHRwckdDZWpkMUFBQUIydXZGaFZBMTk3LnBuZyI+77yM5LiUPGltZyB3aWR0aD0yNDIgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvOTcvRkUvckJBQ0ZGUHRwckhENk12eEFBQURpeGVBVnJnMjEwLnBuZyI+77yM5omA5LulPGltZyB3aWR0aD03NCBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC85Ny9GRS9yQkFDRkZQdHBySHdxS2diQUFBQjhCZWR2TkE3MzQucG5nIj7vvJtE6YCJ6aG577yMPGltZyB3aWR0aD0yMzMgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvNTAvckJBQ0UxUHRwckhTb1AxVUFBQUQ0T09qSnpzMDkxLnBuZyI+77yMPGltZyB3aWR0aD0xNjkgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvOTcvRkUvckJBQ0ZGUHRwckdBb2d1VEFBQUROd095Z2E0ODc3LnBuZyI+77yM5omA5LulPGltZyB3aWR0aD03NyBoZWlnaHQ9MjEgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9DRi81MC9yQkFDRTFQdHByS3lPVGJ2QUFBQ0RhMXB5ZGc0ODYucG5nIj7jgILmlYXpgIlD
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：
- IEHpgInpobnvvIw8aW1nIHdpZHRoPTI4IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzk3L0ZFL3JCQUNGRlB0cHJIeGhLUzVBQUFCbDB3UEktdzEwOC5wbmciPueahOWumuS5ieWfn+aYrzxpbWcgd2lkdGg9NTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvNTAvckJBQ0UxUHRwckNCbjZSbkFBQUIxWVJiZTdFMDUzLnBuZyI+
- 提示2：
- IELpgInpobnvvIw8aW1nIHdpZHRoPTc0IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzk3L0ZGL3JCQUNGRlB0cHJteUtDdDdBQUFCNlJ5TFlJQTY5OC5wbmciPg==
- 提示3：
- IEPpgInpobnvvIw8aW1nIHdpZHRoPTMxIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzk3L0ZGL3JCQUNGRlB0cHJtQTdza25BQUFCbXd3WnBvZzQwNS5wbmciPueahOWumuS5ieWfn+aYrzxpbWcgd2lkdGg9NTcgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQ0YvNTAvckJBQ0UxUHRwcm13Y0c0YkFBQUJ5M0VNMmpZMzIyLnBuZyI+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：
- IDxpbWcgd2lkdGg9MzU1IGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzk3L0ZGL3JCQUNGRlB0cHNLaW5IN2RBQUFFVDN5LUVtVTM5MC5wbmciPg==
- 提示3：
- 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
正确答案：RA==
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