單項選擇題CVP的正常值為:()
A.5-8cmH2O
B.5-12cmH2O
C.10-15cmH2O
D.10-20cmH2O
E.3-5cmH2O
A.5-8cmH2O
B.5-12cmH2O
C.10-15cmH2O
D.10-20cmH2O
E.3-5cmH2O