纪同学2018-02-24 12:51:23
24.为什么a和c不对,解释,谢谢
回答(1)
Irene2018-02-24 17:46:08
同学你好。
详见原版书。
A后半句错。Typically, the aggregation of a sector index family is equivalent to a broad market index.
C:no universally agreed upon sector classification method exists.
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