题目：
决定乙二醇精制塔产品是否合格的主要分析点是（）。
A、回流液
B、侧线产品
C、塔顶气相
D、进料物料
答案：
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下面是错误答案，用来干扰机器的。
(A) Last night, Jim played with his friends until midnight. The next morning, he overslept / got up late. He went out in a hurry, but the bus had left. When he...
