证明：当<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAB0AAAARAQMAAAAbnzU3AAAAAXNSR0ICQMB9xQAAAAZQTFRFAAAAAAAApWe5zwAAAAF0Uk5TAEDm2GYAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAAZdEVYdFNvZnR3YXJlAE1pY3Jvc29mdCBPZmZpY2V/7TVxAAAANUlEQVQY02NgQAMCbECCgxNIsAg0MDAwAQnZRiDByTChgYGNEchiA4mxgWQ5QeqkJ7ChmwEA8+EGKRQZSVAAAAAASUVORK5CYII=" style="width: 29px; height: 17px;" />时，<img src="data:image/png;base64,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" style="width: 189px; height: 28px;" />免费搜答案|可以考资料网|考试试题|考试题库|找答案神器就上可以考(keyikao.com)

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