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【Daily Question】Chemical Analysis Edition, 2021.5.17

2021-05-17View Original

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When determining the freezing point of oils in accordance with GB/T510, if the freezing point of the oil is below 0°C, 1 ml to 2 ml of ( ) should be poured into the bottom of the outer sleeve before the test. A、Anhydrous ethanol B、Ether C、Acetaldehyde D、Propane A

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