用OPTION赌ER相对安全些用10%的资金四两拨千斤

来源: 草原狼-DT 于 2012-05-03 10:20:36 [旧帖] [给我悄悄话] 本文已被阅读：次

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用OPTION赌ER相对安全些 用10%的资金四两拨千斤