好象不能插4根记忆棒啊# Hardware - 计算机硬件
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An water pipeline has a radius of 2 meters and is 300 yards long. If the
pump is operating at 60 gallons per hour, how much water passes through the
entire pipeline in an hour?
pump is operating at 60 gallons per hour, how much water passes through the
entire pipeline in an hour?