你这是风险管理的组合！试想如果这80和20反过来？风险就大了？

来源: hhtt 于 2024-07-07 07:34:00 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.