同时，股票选择是必需的，是一般指标的股票，如上海，深圳300指数。
At the same time, stock selection is required, is the general indicator of stock, such as Shanghai and Shenzhen 300 Index of stocks.
同时，股票选择是必需的，是一般指标的股票，如上海，深圳300指数。
At the same time, stock selection is required, is the general indicator of stock, such as Shanghai and Shenzhen 300 Index of stocks.
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