“三个和尚”的故事中,“一个和尚挑水吃,两个和尚抬水吃,三个和尚没水吃。”主要揭示了下列各项管理职能中哪一职能的重要性?( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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