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app BEIJING, Sept. 24 (Xinhua) -- A two-seater electric aircraft completed its maiden flight on Monday at the Badaling Airport near the Great Wall, in northwest Beijing's Yanqing District. 龙头分析：历史同期第182期龙头分别开出号码：01→02→01，龙头开出比较密集，去年同期龙头号码下降了1个点位，对比去