泡沫细胞（foam cell）
泡沫细胞（foam cell）
相关考题：
单选题A portable foam fire extinguisher is placed in operation by（）Aturning it upside downBpressing the foam leverCsqueezing the grip handleDopening the hose valve
单选题Production of mechanical foam by a portable in-line foam proportioner（）.Aincreases the size of foam bubbles formedBincreases the rate of foam productionCimproves the extinguishing properties of foamDgives the nozzleman more freedom of movement，since it can be placed anywhere in the hose line
单选题Which of the following statements regarding low expansion foam and its application is INCORRECT?（）.AFoam should not be used on electrical firesBOne kilo of low expansion foam solution produces much more foamCFoam is only efficient when it covers the top of burning combustiblesDA stream of foam should be deflected off the deck in order to best agitate the fire
单选题The usual method of effectively applying foam on a fire is by （）.Aspraying directly on the base of the fireBflowing the foam down a vertical surfaceCsweeping the fire before you with the foamDspraying directly on the surface of the fire
单选题The BEST method of applying foam to a fire is to（）.Aspray directly on the base of the fireBflow the foam down a nearby vertical surfaceCsweep the fire with the foamDspray directly on the surface of the fire
单选题0ne of the limitations of foam as an extinguishing agent is that foam（）.Acannot be made with salt waterBis heavierthan oil and sinks below its surfaceCis corrosive and to fire fightersDconducts electricity
多选题下列哪些是变异型的R-S细胞（ ）A陷窝细胞B泡沫细胞C霍奇金细胞D镜影细胞E爆米花细胞(popcom cell)