146,148,148,148,156.148,157,160,140,148的平均数急

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146,148,148,148,156.148,157,160,140,148的平均数急
146,148,148,148,156.148,157,160,140,148的平均数
急

146,148,148,148,156.148,157,160,140,148的平均数急
149.9