题目内容
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[单选题]
:一个容器装满i00克浓度为80%的溶液,从中取出40克,然后用清水将容器倒满,这样反复操作三次,问最后容器中溶液的浓度是多少?()
A.11.52%
B.17.28%
C.28.8%
D.48%
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A.11.52%
B.17.28%
C.28.8%
D.48%
A.70%
B.72.5%
C.77.5%
D.80%
A.0.018
B.0.015
C.0.01
D.0.005
A.1.8% B.1.5% C.1% D.0.5%
A.2
B.3
C.4
D.5
A.1.8%
B.1.5%
C.1%
D.0.5%
A.48%
B.32%
C.28 .2%
D.17.28%
A.7%
B.7.12%
C.7.22%
D.7.29%
A.17.56%
B.17.42%
C.16.38%
D.10.24%