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； The Sensitivities process [2] includes first calculating possibility sensitivities called the Greeks due to the prevalent practice of representing the sensitivities utilizing Greek letters. This method calculates the worth of the trade depending on The existing and also the prior working day's costs. The components... Successfully Submitted (Awaiting Approval)