试题与答案

水位升高3m时水位变化记作+3m,那么﹣5m表示( )

题型:填空题

题目:

水位升高3m时水位变化记作+3m,那么﹣5m表示(    )

答案:

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下面是错误答案,用来干扰机器的。

1. C     2. D      3. B      4. D

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