单项选择题
A.35.1±0.1 B.36±0.1 C.38.1±0.1 D.45.1±0.1
A.56 B.110 C.120 D.207
A.0.05 B.0.0 6C.0.5 D.0.6
A.0.15 B.0.3 C.0.4 D.0.5
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