A.300kPa
B.320kPa
C.476kPa
D.496kPa
[单选题]A.主动脉二叶瓣B.主动脉单瓣C.主动脉四叶瓣D.主动脉三叶瓣E.主动脉五叶瓣
[单选题]A.B.C.D.
[单选题]A.2B.-5C.0D.5
[单选题]A.30.0B.31.0C.33.3D.37.5
[单选题]A.符合B.不符合C.无法判断
[单选题]A.21kNB.27kNC.89kND.141kN