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【单选题】
（）是指为了一定目的，选择适当的分类标志，将商品集合总体科学地、系统地逐级划分为门类、大类、中类、小类、品类以至品种、花色、规格的过程称为商品分类。A.
商品分类
B.
商品标识
C.
商品管理
D.
库存管理
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举一反三
【单选题】What time will the trip take place?
A.
Immediately after the class.
B.
Following the laboratory.
C.
The next day in the morning.
D.
The next week in the morning.
【单选题】An ethics crisis at one of the world's most successful human embryonic stem cell laboratories has plunged the controversial field of research into a new swirl of uncertainty. The accusations surroundi...
A.
Hwang paid the women for their eggs in his studies.
B.
The charge of Hwang re-activized the debate in U. S..
C.
The debate in U. S. is about whether or not pay for eggs.
D.
The planned studies will continue without interruption.
【简答题】Sarah Wilde, a laborator7 worker, wants to find out about forthcoming training courses.
【单选题】There is no question that the old style. of air pollution could kill people. In one week following the infamous 'peasouper' fog in December 1952, 4, 700 people died in London. Most of these people wer...
A.
Low concentrations
B.
Fall in lung function
C.
Irritability of the lungs
D.
Air way inflammation
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