单项选择题
A.0.01015 B.0.01510 C.0.01500 D.0.01515
A.60 B.70 C.80 D.90
A.4 B.6 C.8 D.10
A.[0.05,0.25] B.[0.05,0.15] C.[0.05,0.30] D.[0.05,0.35]
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