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【单选题】
文献的加工级别有A.
零次文献、一次文献、二次文献和三次文献
B.
一次文献、二次文献和三次文献
C.
一次文献、二次文献
D.
零次文献、一次文献
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举一反三
【简答题】Didn ’ t she use to ____________(live) in Germany?
【简答题】将十六进制数D5.A转换为二进制数是( )。
【简答题】脱疽湿热毒盛证的主要表现是（ ）
【单选题】What is the advantage for a company to use differentiation focus strategy?
A.
There is less competition and, therefore, greater pricing flexibility in the niche market.
B.
The company becomes more experienced and specialized at providing goods and services to a limited sector of consumers, and it can charge more for that expertise due to reduced competition.
C.
Both (A) and (B)
D.
Either (A) and (B)
【简答题】Some countries use ____________________ power to produce electricity.
【简答题】Use action verbs in the description of your jobs and ______.
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