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【单选题】
将40克NaOH溶于水中，配制成1L溶液，则该溶液的物质的量浓度为（　　）
A.
0.1mol/L
B.
0.5mol/L
C.
4mol/L
D.
1mol/L
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相关题目：
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【简答题】改错题。 1. They had three major concerts and made a hit CD in the last six months. 2. Only a few people said they have seen them in the concert. 3. If the weather is fine, they won't go to the park next ...
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TGC 东南线
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take over
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come over
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