冰期相对水深0.0,0.2,0.4,0.6,0.8,1.0的测点流速分别为0.30m/s,0.42m/s,0.40m/s,0.31m/s,0.19m/s,0.06m/s,则该垂线平均流速为()m/s。
A、0.31
B、0.30
C、0.29
D、0.28
冰期相对水深0.0,0.2,0.4,0.6,0.8,1.0的测点流速分别为0.30m/s,0.42m/s,0.40m/s,0.31m/s,0.19m/s,0.06m/s,则该垂线平均流速为()m/s。
A、0.31
B、0.30
C、0.29
D、0.28
本题B
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