A.1 B.2 C.3 D.4
A.2∶1 B.1∶1 C.1∶2 D.1∶4
A.動(dòng)力粘滯系數(shù)(動(dòng)力粘度)η B.滲透系數(shù)k C.堰閘側(cè)收縮系數(shù)ε D.謝齊系數(shù)C