(A) Isomerization (X)
(B) Adding (C2H5)4 Pb (X)
(C) Adding (CH3)4 Pb (X)
(D) All ()
Answers: Octane number can be improved by All.
(A) Isomerization (X)
(B) Adding (C2H5)4 Pb (X)
(C) Adding (CH3)4 Pb (X)
(D) All ()
Answers: Octane number can be improved by All.
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