单项选择题
A.3% B.5% C.8% D.10%
A.0.3~1.0,20 B.0.3~1.0,14 C.0.5~1.0,14 D.0.5~1.0,20
A..3~1.5,1.5 B.1.2~1.5,1.2 C..3~1.5,1.2 D..2~1.5,1.3