A.層流 B.中間 C.過渡 D.紊流
A.層流時(shí)污泥流動(dòng)阻力比水流大,紊流時(shí)則小 B.層流時(shí)污泥流動(dòng)阻力比水流小,紊流時(shí)則大 C.層流時(shí)污泥流動(dòng)阻力比水流大,紊流時(shí)則更大 D.層流時(shí)污泥流動(dòng)阻力比水流小,紊流時(shí)則更小
A.1/3 B.2/3 C.1/4 D.3/4