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当水在管中流动时发生流速突然变化,会使水流突然受到很大的正负压力的作用,称为( )

单选题
2021-07-17 23:44
A、反水现象
B、水锤现象
C、垂直失调现象
D、水平失调现象
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正确答案
B

试题解析

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