A.56.7KPa B.76.7KPa C.90.0KPa D.110.0Kpa
A.定常流 B.非定常流 C.非均勻流 D.均勻流
A.△h=-760mm(Hg) B.△h=0mm(Hg) C.△h=760mm(Hg) D.△h=1520mm(Hg)