预案
预案
要是你想让我把你的案子处理得有说服力,你先得原原本本地向我介绍情况。
In the latter case we don't have an opportunity to build up any immunity beforehand because it's, by definition, a new virus.在近期的病例中我们没有机会提前建立任何免疫系统,因为从理论上来讲它是一种新的病毒。
DEA method needs not to specify the assessment index weights beforehand, but it can also be used in case of specified weights.DEA方法不须事先给定评价指标的权重,也可适应指定权重的情况。