You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
产销量(工程量)表示的盈亏平衡点等于生产能力利用率表示的盈亏平衡点乘以设计生产能力。
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