A、<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/RRIU/2018/1205/PIneefgRRIU20181205152250283.png?Expires=3436154574&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=vu09dX%2BiPHTexLwctxIInCxJJSc%3D" title="图片.png" alt="图片.png">
B、<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/YBFA/2018/1205/PIcpdndYBFA20181205152304355.png?Expires=3436154586&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=yiaj5OsTqOpEitSwapij8aXHv%2Fo%3D" title="图片.png" alt="图片.png">
C、<img src="http://ccm2cdn.open.com.cn/zyglpt/PI/VCWB/2018/1205/PIzostsVCWB20181205152314266.png?Expires=3436154597&OSSAccessKeyId=gbI8DRLk7JJhLbEw&Signature=V8bB2RqzU6tcwZB5vv%2BMpQI0mLA%3D" title="图片.png" alt="图片.png">
D、<p><img class="kfformula" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGoAAAAuCAYAAADA6IztAAACIElEQVR4nO3ZsWuTQRjH8e/0bg5d3ql0yR+QpZNTcBGHrnXKIh07FRGy6OIgGdz9Axy62KVIM6WllCKiiw6iZHNRHBwCIhTi8Nz5npf3rUb63vvy9veBF5K7N+TJPbnnLhcQERERERERERERERERkbqsA0fAC+Aj8BnYq7h3BiyAQ6DvHs8SxHjt9YAzIA/atoELLBmhMZYcXJ/vXwDDGmMUYEox+KFnWAJGQVuYjBlKTjIbwNuKPl/WqvoXtUQkpe5iA/6+on9BeUKG/FkWOzmzcmACHACvgSzq3wK+UF6Orlof+El5ojIsSXP3fEiRtHB96mNrV6dk2KDkFKVlFN0zce2baUNbMnBxTIM2P8P6WKI6u+O7Dzx0j3exD7ob3TOn+BbHPmGz7X+uWyvGuu/iG6z4uk54hW2HAd5hA7EW9PtZNkkcV2zg4uhcSVtVDxuI06h9RHk5TCkHvmPb82vPJyQue77uN7U+ZcAHlKTfTrGEbETtX6len+qWYV+Uxw29fyvNsaSE/PoUl8NQnZuJQ8pL7gPgxl9e21kXLG9r/S6wifVpzHIZ9s5TBtI2U2xW+R+769gC3sR2eAwcAzsl1xMun+GdlwMnwEtsTTgCfmAzLaXbFD9iq66niWNqtZsU//FIC6wB39wV8qcAKc735B/4g82DoG0LnQK0Tg87OvL8KcDzZsKRy9zDNg+PgDfAnWbDEREREREREZHG/QKXGJu0bkWJCQAAAABJRU5ErkJggg==" data-latex="y={2}^{x}" style="width: 78px; height: 40px;" width="78" height="40"></p>
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