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根据《茶经》记录，陆羽精心设计了专用的饮茶器具。()

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A jewellery company makes rings (R) and necklaces (N).
The resources available to the company have been analysed and two constraints have been identified:
Labour time 3R + 2N ≤ 2,400 hours
Machine time 0·5R + 0·4N ≤ 410 hours
The management accountant has used linear programming to determine that R = 500 and N = 400.
Which of the following is/are slack resources？
(1) Labour time available
(2) Machine time available

A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2

Which of the following statements is true？

A. The target cost will decrease and the cost gap will increase
B. The target cost will increase and the cost gap will decrease
C. The target cost will remain the same and the cost gap will increase
D. The target cost will remain the same and the cost gap will decrease

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保管不当，茶叶中的各种活性成分发生氧化、降解、转化，从而引起茶叶变质、陈化。()

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近年来我国医疗机构药品招标有()、()两种形式。

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