[单选] If a fixed foam firefighting system on a ship is not of the premix type，a sample of the foam liquid must be tested by（）.

技术措施费包括什么？ 战勤保障大队防蜂服储备数量为5套。 As the air passes through the charge air cooler, its temperature may be reduced and moisture condensed, with the condensate in danger of being carried into the engineSo a water separator should be mounted beneath the bottom part of the engine inlet manifoldA water separator is used in order to （）. keep the air from being carried into the engine。 keep the moisture from being condensed。 keep the danger from being carded into the engine。 take away the condensate from the air。 简述领导战略变革的框架是什么？ OLED是什么？ If a fixed foam firefighting system on a ship is not of the premix type，a sample of the foam liquid must be tested by（）.