A:can't go, finish
B:can go, don't finish
C:go, finish
D:can't go, don't finish
如图所示,物块M在光滑斜面上从A匀速滑到C,速度v=2m/s,其中AB=6m,AC=10m,物块M重GM=100N,物块m重Gm=40N (不计滑轮重,绳重,绳与滑轮间摩擦)求:
下列关于神经系统结构和功能的叙述,不正确的是( )