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【单选题】
某载货汽车满载以 30km/h 匀速上坡( i =0.10 ) ,其中: 汽车总质量: G =38000N ; 车轮半径: r =0.367m ;传动系机械效率: n T =0.85 ;滚动阻力系数: f =0.013 ;空气阻力系数: C D =0.75 ;迎风面积: A =3.8m 2 ;传动系总传动比: i g i 0 =18 ;试计算:汽车上坡时的发动机输出扭矩 T tqA.
121.6 N∙M
B.
501.9 N∙M
C.
105.9N∙M
D.
205.9 N∙M
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