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是一汽大众迈腾，排量是18，涡轮增压。

G is CG OA+OB+OC3 = OG 3OG = OA+OB+OC 1mAG+2nBG+3kCG=0 mOGOA+2nOGOB+3kOGOC=0 m+2n+3kOG = mOA+2nOB+3kOG 3OG = 3m+2n+3k mOA+2nOB+3kOG 2from 1 ，2， we have 3mm+2n+3k 6nm+2n+3k 9km。