单向双向：某些产品的手续费只在开仓时收取，有些则在开仓和平仓时都收取； It Is important to check P&L statements from different accounting intervals, as any changes after a while become far more significant compared to the figures them selves. Puis concentrez votre attention sur certains détails : les expressions du visage, le placement des mains, le ton de la voix, le Successfully Submitted (Awaiting Approval)