flammable - _____ liquids should be stored carefully to avoid fire., firefighting - Every seaman should know the basic of _______., sprinkler system - The automatic ______ went off by mistake. , pull signal - The ____ coming through the lifeline showed the firefighter was ok. , classification - A ______ system is used to indicate type of fire. , ventilation - too much oxygen from the ____ system made the fire larger. , dry chemical fire extinguisher - A _____ contains a powdery substance. ,

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?