如图所示,发射地球同步卫星时,先将卫星发射至近地圆轨道1,然

如图所示,发射地球同步卫星时,先将卫星发射至近地圆轨道1,然后经点火将卫星送入椭圆轨道2,然后再次点火,将卫星送入同步轨道3。轨道12相切于Q点,23相切于P点,则当卫星分别在123轨道上正常运行时,下列说法中正确的是(     )

A.卫星在轨道3上的速率大于在轨道1上的速率

B.卫星在轨道3上的角速度大于在轨道1上的角速度

C.卫星在轨道1上经过Q点时的加速度大于它在轨道2上经过Q点时的加速度

D.卫星在轨道2上经过P点时的加速度等于它在轨道3上经过P点时的加速度

答案

D

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