A.兩者都是正值 B.激動(dòng)壓力是負(fù)值,抽吸壓力是正值 C.兩者都是負(fù)值 D.抽吸壓力是負(fù)值,激動(dòng)壓力是正值
A.10.254KPa/m B.13.244KPa/m C.15.364KPa/m
A.42.4MPa B.40.4MPa C.38.5MPa