单项选择题
A.0.90B.2.33C.1.25D.1.65
A.α=0.084427;β=0.909073B.α=0.084427;β=0.925573C.α=0.090927;β=0.909073D.α=0.090927;β=0.925573
A.0.12%B.0.07%C.0.03%D.0.05%