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

BrokerID	CThostFtdcRemoveParkedOrderActionField
InvestorID	CThostFtdcRemoveParkedOrderActionField
ParkedOrderActionID	CThostFtdcRemoveParkedOrderActionField