XLE最没用，只有在汽油价格高涨，供不应求时做多才会有意思。不然小幅度的波动要做多做空都不划算。

来源: 雅歌1 于 2015-03-27 07:58:17 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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