从下面的处方判断盐酸苯海拉明20g硬脂酸110g单硬脂酸甘油酯74.2g白凡士林100g吐温-8030g甘油60g10%羟苯乙酯(乙醇溶液)10ml纯化水适量共制1000g()
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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