A. 正确 B. 错误
A. 0.02,0.05~0.07 B. 0.03,0.O5~0.07 C. 0.05,0.O5~0.07 D. 0.03,0.05~0.09
A. 0.03 B. 0.05 C. 0.07 D. 0.08