When the statue of the David was finished, Michelangelo Buonarroti was almostA.25 years ol
When the statue of the David was finished, Michelangelo Buonarroti was almost
A.25 years old
B.26 years old
C.28 years old
D.30 years old
When the statue of the David was finished, Michelangelo Buonarroti was almost
A.25 years old
B.26 years old
C.28 years old
D.30 years old
第2题
A.y=0.07861x1.81、R1=4.896m、R2=2.244m
B.y=0.06945x1.85、R1=5.100m、R2=2.040m
C.y=0.07411x1.836、R1=6.936m、R2=2.142m
D.y=0.08806x1.776、R1=4.590m、R2=0.000m
第3题
A.设计洪水位泄流量为Q=3363.16m3/s,校核洪水位泄流量为Q=4146.50m3/s
B.设计洪水位泄流量为Q=3381.56m3/s,校核洪水位泄流量为Q=4236.72m3/s
C.设计洪水位泄流量为Q=3398.37m3/s,校核洪水位泄流量为Q=4257.79m3/s
D.设计洪水位泄流量为Q=3389.84m3/s,校核洪水位泄流量为Q=4247.10m3/s
第4题
A.下游幂曲线为y=0.06032x1.836,上游椭圆方程为
B.下游幂曲线为y=0.05632x1.85,上游椭圆方程为
C.下游幂曲线为y=0.05632x1.85,上游椭圆方程为
D.下游幂曲线为y=0.05632x1.85,上游椭圆方程为
第5题
A.y=0.04122x2
B.y=0.03379x2
C.y=0.02944x2
D.y=0.02570x2
第6题
第7题
A.y=0.021529x2
B.y=0.021985x2
C.y=0.020828x2
D.y=0.020396x2
第8题
某水库总库容为10.89×108m3,拦河坝为混凝土重力坝,正常蓄水位为1110.00m,校核洪水位为1113.80m。溢流坝溢流孔共5孔,每孔净宽12.50m,堰顶高程1098.00m,开敞式溢流堰(上游采用三圆弧曲线、上游堰面直立、下游采用WES幂曲线),溢流堰上游相对高度为65.00m,定型设计水头(Hd)取最大水头(Hmax)的85%,侧收缩系数取ε=0.93,挑流段出口净宽62.50m,挑流鼻坎顶高程1072.50m,挑角为25°,堰面流速系数φ=0.95,下游冲坑处基岩为花岗岩,节理裂隙不发育(小于两组,规则),河床高程1042.50m,泄校核洪水时下游水位1065.50m。
第9题
A.下游堰面曲线y=0.07090x1.810;上游堰面双圆弧半径:R1=5.04m,R2=2.31m
B.下游堰面曲线y=0.06776x1.850;上游堰面双圆弧半径:R1=5.25m,R2=2.10m
C.下游堰面曲线y=0.07234x1.836;上游堰面双圆弧半径:R1=7.14m,R2=2.205m
D.下游堰面曲线y=0.07678x1.810;上游堰面双圆弧半径:R1=5.04m,R2=2.31m
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