题目内容
More than $ 10 million in research costs has been lost a(an) _______nuclear safety problem.
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They will give presentations on those aspects of engineering that are having an _______on the development of military equipment.
They provide information on methods to improve the __________ of training program for older workers, including helping older workers to find protective employment.
I remember Chapman was __________when I told him we might make a million dollars a year.
But it is ___________that publishers, to stay in business, need to bring out a large number of titles every year.
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