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【单选题】
债券管理的指数化方法中，需要使用历史资料估计追踪误差的方差的方法是( )。A.
方法
B.
最优化方法
C.
方差最小化方法
D.
回归方法
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】We don't understand the problem _____ this is the best choice.
A.
that
B.
what
C.
why
D.
whether
【简答题】社会心理学家凯尔曼提出的态度改变需要经历的三个阶段( )、( )、( )。
【单选题】We don't understand the passage_____there are few new words in it.
A.
because
B.
though
C.
since
【单选题】In some cities it is very difficult to have a telephone_____. and people have to wait a long time before they can get a phone.
A.
installed
B.
validated
C.
facilitated
D.
assembled
【简答题】迷信其实是()的产物。
【单选题】We don't understand why you object to with us.
A.
him coming
B.
that he comes
C.
his coming
D.
that he come
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