A rapid sand filter plant is to treat 23, 000m ^ 3 per day at a rate of 120m / day . 1 ) Determine the size and number of units needed if the filtration rate is not to exceed 180 m / da y with one filter being backwash , nor 240m / day with one filter out of service and one filter being backwash . 2) How much water would be required to backwash one filter if the wash is at 1m / min and continues for 10 minutes .

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Explanation:

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d would be the most obvious choice to this question. leaders are supposed to herd their underlings like a shepherd to sheep. a leader should also listen to others when they are talking to one other to gain a better understanding of their mission and surroundings.

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assault rifle is a rapid-fire, magazine-fed rifle designed for military use. it is a shoulder-fired weapon that allows the shooter to select between semi-automatic (requiring you pull the trigger for each shot), fully automatic (hold the trigger and the gun continuously fires) or three-shot-burst modes.