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's Important to compare P&L statements from distinct accounting durations, as any alterations over time turn out to be far more meaningful as opposed to figures by themselves. It is important to match the earnings statement Along with the income flow assertion considering that, under the accrual technique of Successfully Submitted (Awaiting Approval)