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【单选题】
区分极性氨基酸和非极性氨基酸是根据A.
所含的羧基和氨基的极性
B.
所含氨基和羧基的数目
C.
脂肪族氨基酸为极性氨基酸
D.
所含的R基团为极性或非极性
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举一反三
【单选题】The chairman of the company said that new techniques had _________ improved their production efficiency.
A.
violently
B.
severely
C.
extremely
D.
radically
【单选题】According to the passage, investments in service are comparable to investments in production and distribution in terms of the______
A.
tangibility of the benefits that they tend to confer
B.
increased revenues that they ultimately produce
C.
basis on which they need to be weighed
D.
insufficient ysis that managers devote to them
E.
degree of competitive advantage that they are likely to provide
【简答题】It can be inferred from the information contained in the passage that Walt Disney Productions ______ .
【单选题】According to the passage, investments in service are comparable to investments in production and distribution in terms of the ______.
A.
tangibility of the benefits that they tend to confer.
B.
increased revenues that they ultimately produce.
C.
basis on which they need to be weighed.
D.
insufficient ysis that managers devote to them.
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