A.
B.
C.
D.
[单选题]常数,则该方程的通解是( ).A.B.C.D.
[单选题]常数,则该方程的通解是( ).A.B.C.D.
[单选题]A.73.2℃B.55.6℃C.40.2℃D.57.6℃
[单选题]A.1,9B.3,3C.2,4.5D.2.5,3.6
[单选题]A.等温过程B.等压过程C.等容过程D.多方过程
[单选题]A.层流区B.临界过渡区C.紊流光滑区D.阻力平方区
[单选题]A.0.254mB.0.504mC.0.152mD.0.39m
[单选题]A.956238Pa3762PaB.955433Pa4567PaC.957559Pa2441PaD.949639Pa10361Pa