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 formulation for each gain metric over the income and decline assertion (P&L) is said in the subsequent list: It is important to match the profits assertion Using the hard cash movement assertion considering that, under the accrual technique of accounting, a business can log revenues and bills prior https://josuekfsgw.dailyhitblog.com/39632013/the-single-best-strategy-to-use-for-pnl