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用一块平板挡水,平板形心的淹深为hc,压力中心的淹深为hD,则hc( )hD。

单选题
2021-09-01 23:39
A、大于
B、小于
C、等于
D、可能大于也可能小于
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正确答案
B

试题解析

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