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【多选题】
设计精馏塔时，若保持回流比和塔顶产量不变，而进料温度升高，下列哪几项是正确的？A.
塔顶冷凝器热负荷增加
B.
塔顶产品纯度提高
C.
塔顶产品纯度降低
D.
再沸器热负荷增加
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【简答题】I am not sure when I started listening to the radio. In the evening, I like listening to some talk programmes. The host’s (主持人的) beautiful voice makes me relax. The host often has the same feelings as...
【简答题】Module I Listening Tasks
【简答题】listening i exercise.docx
【简答题】Thispart aims to improve your listening ability. There are two passages, we willlisten to them one by one. Listen to the first passage for three times: thefirst one just listen and try to grasp the ma...
【简答题】listening i exercise.docx
【简答题】Thispart aims to improve their listening ability. There are two passages, we willlisten to them one by one. Listen to the first passage for three times: thefirst one just listen and try to grasp the m...
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