A、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">15</span></p>
B、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">20</span></p>
C、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">30</span></p>
D、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">60</span></p>
A、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">15</span></p>
B、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">20</span></p>
C、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">30</span></p>
D、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">60</span></p>
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