A.>2g/dl B.>4g/dl C.>5g/dl D.>7g/dl E.>10g/dl
A.慢性支氣管炎 B.右心衰竭 C.左心衰竭 D.腸源性發(fā)紺 E.高鐵血紅蛋白血癥
A.1/10 B.1/5 C.1/4 D.1/3 E.1/2