A.不小于2.0% B.不大于2.0% C.不大于1.5% D.不小于1.5%
A.小于2.0 B.0.5~1.5 C.大于1.5 D.0.95~1.05
A.0.5~1.5 B.不小于1 C.大于2.0 D.大于1.5