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Airtine-maintenance hest practice could ( ) oil industry profitability.

A. overhaul
B. enhance
C. confuse
D. guide

参考答案

参考解析
解析:考查词汇辨析。“航空管制命令能够.......石油行业的盈利”。A项:overhaul:超过、检修;B项:enhance:提升、增加;C项:confuse:使混乱、困惑;D项:guide:引导、操纵、带领。根据句意可知B选项正确。
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