Anglais example sentences with "flasks"

Are the flasks made of glass or plastic?
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Who broke thirteen test tubes, three volumetric flasks and a pipette in the laboratory?
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The school won't turn on the air conditioning, so the students are going to throw their hot water flasks off of the balcony in protest.
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Obviously, we don't know if those thermos flasks are their own.
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Big overcoats and high boots suddenly became fashionable because they could easily conceal flasks, giving birth to the term “bootlegger.”
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The laboratory table was full of flasks, retorts, test tubes, and similar equipment.
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