分馏塔操作中，淹塔不会造成（）。A.塔压迅速上升 B.侧线产品变_爱下问搜题

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问题单项选择题

分馏塔操作中，淹塔不会造成（）。

A.塔压迅速上升

B.侧线产品变重

C.侧线抽出量大

D.侧线温度上升

答案

参考答案：C

问答题

试述宋代理学产生的社会背景及主要内容，评价一下其对后世的影响。

完形填空

My uncle had a small farm. He also worked in a         .
One autumn, he promised to help his neighbor harvest(收割) their corn（玉米）.         , after harvesting their corn, my uncle’s little machine broke.        the same time, the factory where Uncle worked began to work for more hours. He had to leave the farm early in the morning and didn’t get home until very late. It now seemed         to help out his neighbor. But my uncle decided to do it by hand.
One night, after working all day in the factory, my uncle went to the neighbor’s farm and       the work under the bright moon.
My uncle kept his promise. He also taught me an important lesson: keeping a promise is more important than making it.