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【单选题】
设集合A={x∣0 x 5 },集合B={x∣-1 x 2 },则A B=A.
{x∣-1 x 2 }
B.
{x∣-1 x 5 }
C.
{x∣0 x 2 }
D.
{x∣-1 x 5 }
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反馈参考答案：
举一反三
【单选题】_ is the separation of the logical view of data from its implementation.
A.
Abstraction
B.
Data abstraction
C.
Procedural abstraction
D.
Control abstraction
【单选题】关于下段乐谱,正确的和弦分析是?
A.
i - ii - v/v - v - i
B.
i - iv - v7/v - v - i
C.
i - ii - v7/v - v7 - i
D.
i - iv - v7/v - v7 - i
【简答题】Extraction Extraction in chemistry is a separation process consisting in the separation of a substance from a matrix. It includes Liquid-liquid extraction, and Solid phase extraction. The distribution...
【判断题】Separation principle of adsorption method: the adsorption separation process is to realize the separation of difficult adsorption components and easy adsorption components by taking advantage of the d...
A.
正确
B.
错误
【单选题】关于下段乐谱,正确的和弦分析是?
A.
i - iv - v7/v - v - i
B.
i - ii - v7/v - v7 - i
C.
i - iv - v7/v - v7 - i
D.
i - ii - v/v - v - i
【简答题】What is the separation between stationary mold and moving mold?
【简答题】reaction is the separation of a chemical compound into elements or r compounds.
【简答题】reaction is the separation of a chemical compound into elements or r compounds.
【单选题】关于谱例72:舒伯特《bB大调即兴曲》的主题分析,下列不正确的是
A.
第一部分乐段A由8小节组成，调式调性为bB大调
B.
第一部分乐段A分为两个乐句，两乐句是并列关系，结构为4+4，是方整性结构
C.
第一部分乐段A的结尾停在bB大调的属和弦上，是开放性终止，为乐段B的进行提供铺垫与准备
D.
第一部分乐段A的结尾和弦是由 b7 2 4 组成的。
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