A、<p><img class="kfformula" src="data:image/png;base64,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" data-latex="\frac {3} {2}"></p>
B、<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">1</span><br></p>
C、<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">3</span><br></p>
D、<p><span style="font-family: 微软雅黑, 'Microsoft YaHei';">0</span><br></p>