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【单选题】
在25℃时，0.01 mol∙kg-1糖水的渗透压为π1，0.01 mol∙kg-1食盐水的渗透压为π2，则两者的渗透压
A.
无法比较
B.
π 1 ＞ π 2
C.
π 1 ＝ π 2
D.
π 1 ＜ π 2
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