A.1:2 B.2:1 C.1:1 D.1:4
A.0.24 B.0.48 C.0.6 D.0.966
A.噴嘴臨界流量只與噴嘴初參數(shù)有關B.噴嘴臨界流量只與噴嘴終參數(shù)有關C.噴嘴臨界流量與噴嘴壓力比有關D.噴嘴臨界流量既與噴嘴初參數(shù)有關,也與噴嘴終參數(shù)有關