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单项选择题

“20℃时，氯化钾的溶解度为34g”是指（）

A.20℃时，100gKCl溶液中含有34
B.20℃时，100g水中最多溶解34gKCl
C．20℃时，该KCl溶液的溶质的质量分数是34%
D．100g水中最多溶解34gKCl
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