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A. increase their income by working overtime
B. improve their expertise and service
C. make various deals with specialists
D. see more patients at the expense of quality
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Why did Rebecca want to enter this year's writing contest?
A) She believed she possessed real talent for writing.
B) She was sure of winning with her mother's help.
C) She wanted to share her stories with readers.
D) She had won a prize in the previous contest.
已知某工作总时差为8天,最迟完成时间为第16天,最早开始时间为第7天,则该工作的持续时间为()。
净现值作为评价投资方案经济效果的指标,其特点包括()。