A.7.56 B.8.35 C.9.74 D.10.17
A.1米,λQ=1000 B.10米,λQ=100 C.1米,λQ=100000 D.10米,λQ=100000
A.1.776 B.1.307 C.1.245 D.1.403
A.均匀流与非均匀流 B.层流与紊流 C.急流与缓流 D.明流与管流