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【Daily Question】Chemical Analysis Version 2021.3.1

2021-03-01View Original

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This post was last edited by zjp on 2021-3-1 08:03. Multiple-choice question: Measuring and testing instruments should be equipped with prominent markings. They are labeled with a certificate of conformity, a permit for use, and a certificate of suspension – what colors are used to represent them in order? A、Blue B、Green C、Yellow D、Red Answer: BCD

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