A.Because we need to concentrate for our quiet thought. B.Because we want to give full attention to the driving. C.Because we try to avoid being caught by the patrolling police. D.Because we intend to be as casual as possible in the driving.
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【单选题】把一个静止质量为 m 0 的粒子,由静止加速到 0.6 c , 需要对电子做的功为( )。