题目内容

蒸馏测定中，对量筒的要求：冷凝管的下端应位于量筒的（)，且伸入量筒至少（)，对不低于（)毫升刻度线，用一块吸水纸或相似的材料将量筒（)，且该吸水纸紧贴冷凝管。蒸馏烧瓶支管插入冷凝管的长度达到（)毫米。

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