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风选是根据药物与杂质的什么不同以分离药物中所含杂质

单选题
2021-07-17 21:50
A、<p><span style="font-size: 10.5pt; font-family: 宋体;">比重</span></p>
B、<p><span style="font-size: 10.5pt; font-family: 宋体;">体积</span></p>
C、<p><span style="font-size: 10.5pt; font-family: 宋体;">质量</span></p>
D、<p><span style="font-size: 10.5pt; font-family: 宋体;">浮力</span></p>
E、<p><span style="font-size: 10.5pt; font-family: 宋体;">气味</span></p>
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正确答案
A

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