题目内容
(请给出正确答案)
[单选题]
100克水中放入15克糖,放置两天后,糖水重量仍是100克,浓度比原来提高了百分之几?()
A.5%
B.10%
C.15%
D.20%
提问人:网友sevenmiddle
发布时间:2022-01-06
A.5%
B.10%
C.15%
D.20%
A.75%,12.5%
B.25%,12.5%
C.15%,50%
D.50%,62.5%
A.甲
B.乙
C.丙
D.乙和丙
A.48%
B.28.8%
C.11.52%
D.17.28%
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