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世界政治多极化发展的原因是什么?

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Task 3 Complete the sentences with the correct form of the words in Task 3.1. The product life cycle is the journey from "new and ______" to "old and dated."2. The meals he prepares are always .3. He was a guy who _ life to the full.4. Senior management enjoys certain , such as company cars and private healthcare.5. This coffee shop is always full because they serve coffee at a reasonable price.6. The big increase in sales __ everyone in the team.

力在坐标轴上的投影是量，如投影的指向与坐标轴的正向一致时，投影为号；力与某坐标轴垂直时，力在该轴的投影为，在另一个垂直坐标轴投影绝对值与该力的大小。

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