A fuel tank is considered to be gas free when the tank is_____.
A、inertedwithcarbondioxidefor24hours;
B、freeofmostflammablegasconcentrations;
C、thoroughlyventilatedforatleast24hours;
D、freeofdangerousconcentrationsofflammableortoxicgases
发布时间：2025-05-26 04:28:59
