单项选择题
A.0.2%~0.3%;0.5~1.0% B.0.2%~0.5%;0.5~1.0% C.0.2%~0.5%;0.8~1.5% D.0.1%~0.5%;0.5~1.0%
A.150、80 B.200、80 C.180、70 D.160、80