What is NOT a problem when carrying coal ________．A.The requirement for through-ventilationB.The corrosion some types of coal will cause to the shipC.Spontaneous heatingD.Generation of methane gas
What is NOT a problem when carrying coal ________．
A.The requirement for through-ventilation
B.The corrosion some types of coal will cause to the ship
C.Spontaneous heating
D.Generation of methane gas
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