单项选择题
A.0.1~0.2 B.0.2~0.8 C.0.8~1.0 D.1.0~1.5 E.0.3~0.7
A.0.1% B.0.2% C.0.5% D.1.0% E.2.0%
A.0.5g B.1.0g C.1.2g D.1.5g E.2.0g