A、<span style="font-size:16px;font-family: 'Times New Roman','serif'">Q<sub>A</sub> </span><span style="font-size:16px;font-family:宋体">></span><span style="font-size:16px;font-family:'Times New Roman','serif'"> Q<sub>B</sub> </span>
B、<span style="font-family: 'Times New Roman', serif;"> </span><span style="font-family: 'Times New Roman', serif;">Q<sub>A</sub> = Q<sub>B</sub> </span>
C、<span style="font-family: 'Times New Roman', serif;"> </span><span style="font-family: 'Times New Roman', serif;">Q<sub>A</sub> </span><span style="font-family: 宋体;"><</span><span style="font-family: 'Times New Roman', serif;"> Q<sub>B</sub> </span>
D、<span style="font-family: 宋体;">不能确定大小</span>
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