某超市用2500元购进一批鸡蛋,销售过程中损耗鸡蛋10千克。已知超市每千克鸡蛋的售价比进价高1元,全部售完后共赚440元,则共购进这批鸡蛋多少千克:
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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