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某品牌汽车总质量1.15t,以108km/h的速度匀速行驶30km,若汽车所受的阻力为汽车重力的0. |
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发表于 2013-6-14 12:04:22
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|Archiver|手机版|小黑屋|崇州蜀鑫信息 ( 蜀ICP备12004464号-1|51018402000053 )
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