First observation range, dividing value and 0 points, the measured liquid temperature cannot exceed range; All the glass bulb thermometer into the liquid being measured, don't touch the bottom of the container or the container wall; Glass bulb thermometer immersed in liquid after being tested to wait for a moment, with a thermometer readings stability after reading; Reading thermometer glass bulb to remain in the liquid, the liquid column in the line of sight with thermometer faces flat above. Note: don't jilt before measuring temperature.
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