在飞行中当出现危险品事故时，客舱机组采取的最初行动（）。 ["通知机长","将旅客从该区域撤走","查明物品","迅速用水扑灭火灾"]
为了减少成本，经销商一般都希望能获得制造商的价格折扣，价格折扣的形式主要有（）。 ["订货数量折扣","季节折扣","协作力度折扣","进货搭配折扣","按货款回收速度决定价格折扣"]
Upon the completion of required tests, a （） should be placed on each extinguisher, showing the date and the person who completed the tests. ["cap","disc","tag","cover"]
简述九江头槽绦虫病的症状和病理变化。
If you must enter a room or compartment to combat the fire, keep an escape path （）. ["open","close","opens","close"]
简述九江头槽绦虫病的感染途径。
