管径d=100mm,粗糙度为k=0.2mm,管长L=500m,管内流速3m/s,

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问题 管径d=100mm,粗糙度为k=0.2mm,管长L=500m,管内流速3m/s,已知处于紊流粗糙区。则其沿程损失为( )m。A. 34.5 B. 43.3 C. 25.2 D. 53.4

选项

答案D

解析[img]/upload/tiku/36/2206753_1.jpg[/img]
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