柜员执行“6804汇划来账主动退汇”交易时，必须录入原汇划来账的（）。 ["支付交易序号","支付业务编号","报文标识号","交易流水号"]
An inert gas system on a tanker should be used to（）. ["prevent the generation of flammable or combustible gas in tanks","blow out cargo lines to prevent gas concentrations","dilute tank atmospheres to keep gas concentrations below the lower explosive limit","prevent fires in the pumproom by continually displacing flammable vapor"]
控制台的基本维修方法包括哪些？
小李和妻子的哥哥是（） ["直系姻亲","旁系姻亲","旁系血亲","直系血亲"]
An inert gas system is designed to reduce the possibility of tank explosions by（）. ["eliminating sparks and fire in the vicinity of cargo tanks","removing all hydrocarbon gases from the cargo tanks","blanketing cargo tanks with inert foam","reducing the oxygen concentration below levels necessary for combustio"]
数字硬盘录像机的基本维修方法包括哪些？
