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劳动合同必须书面，不能口头协议
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用人单位必须为劳动者购买基本社会保险
________ is finding the most cost-effective media to deliver the desired number and type of exposures to the target audience
What function does a company's public relations department perform when it promotes understanding of the organization through internal and external communications?
Persuasive advertising aims to create brand awareness and knowledge of new products or new features of existing products.
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