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； We're sending the requested data files towards your electronic mail now. If you do not receive the e-mail, be sure to check your spam folder before requesting the files all over again. 今日持仓/昨日持仓：中国期货通常指定平今仓和平昨仓来收取不同的费用； La gente varía mucho a la hora de darse cuenta de lo que ve, es... https://pnl81235.wiki-jp.com/1414551/the_2_minute_rule_for_pnl