A.≥0.00025/s B.≥0.0025/s C.≤0.0025/s D.≤0.008/s
A.合格 B.不合格 C.數(shù)據(jù)無(wú)效 D.無(wú)法確定
A.21.0% B.21.5% C.22.0% D.20.0%