Based on the analysis about the composition of cost in coal preparation and the practical situation in Jincheng mining bureau, some methods to decrease the cost are put forward.

在分析选煤加工费构成的基础上，针对晋城矿务局某矿实际提出了一些降低选煤加工费的方法和途径。

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Second, the results of requests are cached, thus decreasing the overall cost of service composition and orchestration.

其次，请求结果是被缓存的，因而可以减低合成服务和编制的总体开销。

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It will also cost money to change the composition of food.

而且改变食物成分也得花钱。

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This improvement is principally due to higher auction and private sale commission revenues, partially offset by an increase in operating expenses that is due, in part, to higher incentive compensation costs, a higher level of direct costs consistent with the volume and composition of auction sales, and the cost of investments in strategic initiatives.

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