A fire starting by spontaneous combustion can be expected in which condition?（）.

A . low-velocity fog B . high-velocity fog C . a straight stream of water D . foam spray

A . allowing better access in an emergency B . eliminating potential fuel sources C . eliminating trip hazards D . improving personnel qualificatio

A . stop engine B . finished with engine C . dead slow ahead D . dead slow aster

A . a blanket of bubbles formed on the surface of the fire B . smothering C . cooling D . isolating the heat from the fuel

A . convection B . conduction C . radiation D . ventilatio

A . breaking the chain reaction B . smothering the fire C . cooling the fire D . coating the fuel with a nonflammable surface

A . shutting off the air supply B . cooling the fuel to below ignition temperature C . dispersing the fuel D . removing the source of ignitio

A . cigarette butts B . oily rags C . burner torches D . lighted matche

A . cooling the gas below the ignition point B . cutting off the supply of oxygen C . stopping the flow of gas D . interrupting the chain reactio

A . yellowish flame B . golden yellow flame C . milky flame D . brilliant white flame

A . starting the fire pumps B . checking firemans outfits and other personnel rescue equipment C . checking relevant communications equipment D . All of the above

A . an electrical switchboard B . the pressure tanks C . the fuel oil tanks D . the oily rag bi

A . heated gases flowing through ventilation syetem B . the transfer of heat across an unobstructed space C . burning liquids flowing into another space D . transmitting the heat of a fire through the ships metal

A . the heat B . the fuel C . the oxygen D . any of the above

A . turning it upside down B . pressing the foam lever C . squeezing the grip handle D . opening the hose valve

A . cooling B . smothering C . chemical action D . All of the above

A . looking at the gage B . checking the nameplate data C . weighing by hand D . weighing on a properly calibrated scale

A . cooling B . chemical action C . smothering D . inerting the air

A . remote operated valve B . fusible link C . CO system pressure switch D . heat or smoke detector

A . Conduction of heat to adjacent surfaces B . Direct radiation C . Convection D . All of the above

A . cooling B . smothering C . chemical action D . All of the above

A . combustible material B . ignition source C . oxygen D . A and B and C

A . transmitting the heat of a fire through the ship s metal B . burning liquids flowing into another space C . heated gases flowing through ventilation systems D . the transfer of heat across an unobstructed space

A . Manual fire detection system B . Automatic fire detection system C . Smoke detection system D . Watchman's supervisory system