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【单选题】
萃取体系的分配比在什么情况下等于分配系数( )A.
溶质在两相中的存在形式完全相同时
B.
溶质在两相中的溶解度完全相同时
C.
溶质为弱酸、弱碱时
D.
分配系数为 1 时
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举一反三
【单选题】The light above the elevator ______ that the elevator was then at the fifteenth floor.
A.
indicated
B.
displayed
C.
demonstrated
D.
appeared
【单选题】( )consists of all messages relating to the immediate assistance required by the ship in distress
A.
Distress traffic
B.
Distress alarm
C.
Safety traffic
D.
Urgency traffic
【简答题】Hello! My name is Edna Cookie. I am 10 years old. I live in Umiujaq(乌缪亚格), a village in Nunavik(怒勒维特), Canada. I have a sister and a brother. My mother is a teacher and my father is a policeman. My fa...
【单选题】The elevator was _____ and we had to walk to the tenth floor.
A.
out of date
B.
out of order
C.
out of fashion
D.
out of place
【简答题】常用的助行器种类不包括() A单脚手杖 B四脚手杖 C四轮式步行器 D假肢
【简答题】货币和财富是同一个概念。()
【单选题】It can be inferred from Para. 3 that at present__________
A.
a country can never expect to reconstruct its debts
B.
a country can reconstruct its debt with the permission of IMF
C.
a country in default cannot reconstruct its debts without the permission of all of its creditors
D.
a country in default can reconstruct its debts by acquiring the permission of most of its creditors
【简答题】Translate the following sentece into Chinese: Her hesitation about joining them in the elevator was all too obvious now. Her face was flushed.
【单选题】The light above the elevator________ that the elevator was then at the fifteenth floor.
A.
indicated
B.
suggested
C.
symbolized
D.
aimed
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