肯定是有用的
问题是要用多少资金来保护,做错方向的风险有多大
肯定是有用的
问题是要用多少资金来保护,做错方向的风险有多大
•
我哪敢说没用啊, 这里老师说了算:-)
-田牛妹1-
♀
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12/19/2024 postreply
09:43:47
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