A、an unprotected drop-light bulb
B、careless disposal or storage of material
C、smoking in bed
D、worn electrical wires on power tools
更多“Spontaneous ignition can result from（）.”相关的问题
A、air from contacting the oil vapors B、permitting re-ignition boiling of the heated oil C、spontaneous combustion below the oil surface D、toxic fumes from escaping to the surface
A、An increase in compression ratio will increase the ignition lag B、An increase in compression ratio will decrease the ignition lag C、A decrease in compression ratio will decrease the ignition lag D、A decrease in ignition lag will increase the compression ratio
A、can not be ignited by a spark unless the vapor is in a confined space B、are nontoxic in all concentrations C、can not be ignited by a spark unless they are at their auto-ignition temperature D、are heavier than air
A、no spark or flame is required to ignite gas or vapor B、a fuel begins to give off explosive vapors C、a fuel if ignited will continue to burn D、a 1% mixture of the fuel with air will explode
A、fuel will not be properly atomized in the cylinder B、ignition will be delayed due to low ignition temperature C、maximum fuel expansion will occur on the compression stroke D、fuel will ignite before top dead center
A、shutting off the air supply B、cooling the fuel to below ignition temperature C、dispersing the fuel D、removing the source of ignition
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