问题
单项选择题
汇流水管如图所示,已知三部分水管的横截面积分别为A1=0.01m2,A2=0.005m2,A3=0.01m2,入流速度v1=4m/s,v2=6m/s,求出流的流速v3为:()
A.8m/s
B.6m/s
C.7m/s
D.5m/s
答案
参考答案:C
汇流水管如图所示,已知三部分水管的横截面积分别为A1=0.01m2,A2=0.005m2,A3=0.01m2,入流速度v1=4m/s,v2=6m/s,求出流的流速v3为:()
A.8m/s
B.6m/s
C.7m/s
D.5m/s
参考答案:C