某区城管局以甲摆摊卖“麻辣烫”影响环境为由,将其从事经营的小推车等物品扣押。在实施扣押过程中,城管执法人员李某将甲打伤。对此,下列哪一说法是正确的?( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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