这个数组是什么类型？
Car [] cars ={new AudiA4("AudiA4\t",500,4,0),new PickUpSnow6("PickUpSnow6",450,4,2),new SongHuaRiver("SongHuaRiver",400,0,4)};
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Car [] cars ={new AudiA4("AudiA4\t",500,4,0),new PickUpSnow6("PickUpSnow6",450,4,2),new SongHuaRiver("SongHuaRiver",400,0,4)};
2016-02-29
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