单选题Normal pool elevation is the height in feet of the section of river above a dam. This height is measured from（）.Alow steel on the Huey P. Long BridgeBmean sea levelCthe local water tableDthe minimum dam control level
单选题
Normal pool elevation is the height in feet of the section of river above a dam. This height is measured from（）.
A
low steel on the Huey P. Long Bridge
B
mean sea level
C
the local water table
D
the minimum dam control level
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