While some people might not immediately associate blue-collar occupations with higher-level formal education, some of these managers and supervisors must have extensive knowledge of business or sciences to perform the tasks of, for example, power plant operator or agricultural manager.

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They have extensive product, systems, and process knowledge.

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Many in the audience might have thought Zhu had honed his language skills and extensive knowledge of finance through years of work abroad, possibly in the diplomatic service.

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Shakespeare is not known to have traveled outside of England, yet the plays reveal an extensive knowledge of Italy and France.

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