Under the action of constant horizontal force F1, the object on the horizontal plane moves at a constant speed V1; if the force becomes a constant oblique force F2, the object moves at a constant speed v2 And the power of F1 and F2 are the same A F1=F2,V1>V2 B F1=F2,V1F1,V1>V2 D F2

Under the action of constant horizontal force F1, the object on the horizontal plane moves at a constant speed V1; if the force becomes a constant oblique force F2, the object moves at a constant speed v2 And the power of F1 and F2 are the same A F1=F2,V1>V2 B F1=F2,V1F1,V1>V2 D F2

The question may be correct, that is, it must be true under this condition. However, it may not be true in C. Because F1 / F2 = V2 / V1 × cos α, and under C condition, F1 / F2 must be less than 1, and V2 / V1 × cos α may not be less than 1, we get the above answer