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【单选题】
与股票和债券相比，证券投资基金是一种（ ）的投资品种。A.
高风险、高收益
B.
低风险、低收益
C.
风险相对适中、收益相对稳健
D.
基本没有风险
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举一反三
【单选题】Anais Nin's diaries are often scandalous, probably because she describes herself as she is rather than ______ .
A.
others define her
B.
as others define her
C.
her definition by others
D.
she is defined by others
【简答题】B2B 网站的盈利模式有哪些?
【单选题】After the First World War, the author Anais Nin became interested in the art movement known as Surrealism and in psychoanalysis, both______her novels and short stories.
A.
in which the influence
B.
to have influence on
C.
of which influenced on
D.
its influence in
【单选题】若 f 只涉及到 E1 的属性,则σ f(E1 × E2) ≡()。
A.
σ f(E1) × E2
B.
σ f1(E1) ×σ f2(E2)
C.
σ f2( σ f1(E1) × E2)
【简答题】B2B 网站的盈利模式有哪些?
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