The atmosphere in a tank is too rich when it is _____.
A
incapable of supporting combustion because the hydrocarbon vapor content makes the atmosphere below the LFL (Lower Flammable Level)
B
capable of supporting combustion
C
in a noncombustible state which can be relied on to occur naturally on a regular basis
D
incapable of supporting combustion because the hydrocarbon vapor content makes the atmosphere above the UFL (Upper Flammable Limit)
E
İlgili Sorular
On 25 December 1981 you observe the Sun's lower limb. The sextant altitude (hs) is 4°06.9'. The h...A fire hose has a _______________.When a magnetic compass is not in use for a prolonged period of time it should _____________.The letter G, when sent with a complement, may be followed by ______.The time required to incline from bow down to stern down and return to bow down again is called ____...