单项选择题
A.0.12m B.0.15m C.0.20m D.0.30m
A.0.2 B.0.3 C.0.4 D.0.5
A.0.1 B.0.2 C.0.3 D.0.4
A.0.5m×0.6m×1.0m B.0.5m×0.6m×0.8m C.0.5m×0.7m×0.8m D.0.5m×0.6m×0.7m
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