下列方程的变形中,正确的是( )
I the school bus this morning. Luckily, Tony's father gave me a ride.
图所示为长征三号丙运载火箭携带第十一颗北斗导航卫星加速升空的情景。关于这颗导航卫星在加速升空过程中其机械能的变化,下列说法中正确的是()
It is nearly 50 years ______ the People's Republic of China was founded.