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颗粒材料的密度ρ、表观密度ρo。与堆积密度ρ′o之间，下列关系中何者是正确的( ) A: ρo＞ρ＞ρ′o B: ρ＞ρo＞ρ′o C: ρ′o＞ρo＞ρ D: ρ＞ρ′o＞ρo

【单选题】对于理想液态混合物的混合过程,混合前后下列关系正确的是 () A. △V=O, △H=O, △S>O, △G<O B. △V<O, △H>O, △S>O, △G<O C. △V<O, △H>O, △S<O, △G>O D. △V=O, △H=O, △S<O, △G>O A. △V=O, △H=O, △S>O, △G B. △V O, △S>O, △G C. △V O, △S O D. △V=O, △H=O, △S O