______ management is one of the factors which will lower production cost.

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问题 ______ management is one of the factors which will lower production cost.

选项 A、Effective
B、Efficient
C、Sufficient
D、Inefficient

答案A

解析 同义和词形辨析。effective指“有效果,有效力”,既然要降低生产成本,所以必须是有效果的管理。efficient指“(人)有能力,有效率”;sufficient指“充足的”;inefficient指“低效率,无用的”。
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