单项选择题
A.0.1% B.0.2% C.0.3% D.0.4%
A.85~95;70~80 B.50~80;60~110 C.50~110;60~80 D.60~100;50~80
A.0.25(0.35) B.0.25(0.40) C.0.25(0.30) D.0.20(0.30)