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老师，这个题干是n<0,q>0,and r>0
Quantity A
(2n)(2q)(2r)
Quantity B
2[(n)(q)(r)]
所以这个为什么不是D啊，如果nqr乘到一起是负分数，那B小；如果是整数，那么A小
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老师这个为什么不是D啊，如果nqr乘到一起是负分数，那B小；如果是整数，那么A小
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