(判断题)一般认为,更精确地表示投资和利率关系的曲线是投资的边际效率(MEI)曲线,而非资本的边际效率(MEC)曲线。( )(本题2.0分)
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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