[".1 �气化每日一题
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气化炉内第一层耐高温砖的主要成分是( )。A.AL層O3 B.S硅O3 C鉻層O3 D.AL層O3＋鉻層O3 pérdida
你这个第一层有歧义，三层耐火砖分别叫做向火面砖、中间层砖和背火面砖，如果从外向里第一层就是向火面砖答案是C。
C.Cr2O3#在这里快速回复#
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