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What's a cheap easy useful hack to use in your home? (1 comment)
What did you study when you was at school? (1 comment)
Great first lecture. Well done Danielle and RI. One small note regarding your next lecture. The telephone was not (3 comments)
How many types of engineers are there? Because my dad's a heating engineer. (1 comment)
How does a sensor work? (1 comment)
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