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一实验装置将含Ａ10％的AB50kg和含A80%的AB20kg混合后，用溶剂S萃取， 所得萃取相和萃余相脱除溶剂后得到90％A和20％A的溶液，则此时的选择性系数β等于（ ）。
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一实验装置将含Ａ10％的AB50kg和含A80%的AB20kg混合后，用溶剂S萃取， 所得萃取相和萃余相脱除溶剂后得到90％A和20％A的溶液，则此时的选择性系数β等于（ ）。
A、36
B、38
C、34
D、32
时间：2021-09-01 16:56
关键词：
青书学堂
平顶山学院
化学
化工装备
答案解析
A
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3. 一实验装置将含Ａ10％的AB50kg和含A80%的AB20kg混合后，用溶剂S萃取， 所得萃取相和萃余相脱除溶剂后得到90％A和20％A的溶液，则此时的选择性系数β等于（ ）。
一实验装置将含Ａ10％的AB50kg和含A80%的AB20kg混合后，用溶剂S萃取， 所得萃取相和萃余相脱除溶剂后得到90％A和20％A的溶液，则此时的选择性系数β等于（ ）。
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CASE OF DEATH OR SERIOUS INJURY TO A PERSON IN AN ACCIDENT OR SHIPPING DISASTER is（）.
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设a=5，b=4，c=3，d=2，则表达式3＞2*b Or a=c And b＜＞c Or c＞d的值是
设a=5，b=4，c=3，d=2，则表达式3＞2*b Or a=c And b＜＞c Or c＞d的值是
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（）means any person by whom or in whose name or on whose behalf a contract of carriage of goods by sea has been concluded with a carrier，or any person by whom or in whose name or on whose behalf the goods are actually delivered to the carrier in relation to the contract of carriage of goods by sea.
If he is a common carrier，he is absolutely responsible to the owner of the goods carried （）any loss or damage to them unless caused by an Act of God or the Queen’s enemies，or the inherent vice in the goods themselves，or the negligence of the owner of the goods，or a general average sacrifice.
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