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判断题 】There are two types of lighting in workplaces: natural lighting and artificial lighting, and the artificial lighting includes uniform lighting, local lighting and key lighting.(作业场所的光照形式有天然采光和人工照明两种,而人工照明方式有均匀式照明、局部照明和重点照明.)

学科:默认课程
时间:2026-05-21 07:27:34
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