成员的完整列表，这些成员属于 CThostFtdcOptionInstrTradeCostField,包括所有继承而来的类成员

BrokerID	CThostFtdcOptionInstrTradeCostField
ExchFixedMargin	CThostFtdcOptionInstrTradeCostField
ExchMiniMargin	CThostFtdcOptionInstrTradeCostField
FixedMargin	CThostFtdcOptionInstrTradeCostField
HedgeFlag	CThostFtdcOptionInstrTradeCostField
InstrumentID	CThostFtdcOptionInstrTradeCostField
InvestorID	CThostFtdcOptionInstrTradeCostField
MiniMargin	CThostFtdcOptionInstrTradeCostField
Royalty	CThostFtdcOptionInstrTradeCostField