A.Bi<0.1B.Bi>0.1C.Bi<1D.Bi>1
A.過余溫度的98.2%B.過余溫度的99.2%C.過余溫度的90.2%D.過余溫度的88.2%
A.300-400℃B.400-500℃C.500-600℃D.600-700℃