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ISO/IEC 80079-20-2:2016 is published as a dual logo standard and describes the test methods for the identification of combustible dust and combustible dust layers in order to permit classification of areas where such materials exist for the purpose of the proper selection and installation of electrical and mechanical equipment for use in the presence of combustible dust.
The Difference Between GMT and UTC. Greenwich Mean Time (GMT) is often interchanged or confused with Coordinated Universal Time (UTC). But GMT is a time zone and UTC is a time standard. The Royal Observatory in the UK. The Royal Observatory in Greenwich, London, United Kingdom.
You have just listened to the Queen's birthday speech. Answer the questions in the quiz, if necessary, return to the radio programme. In some questions you have to choose the correct option, to short answer questions try to give as accurate and full answers as you can, otherwise your score will be reduced.
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