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【单选题】
To survive in the intense trade competition between countries, we must ______ the qualities and varieties of products we make to the world market demand.
A.
improve
B.
enhance
C.
guarantee
D.
gear
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【判断题】企业主动选择特定的客户，有利于树立明显的企业形象。（ ）
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查看完整题目与答案
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