My schedule is quite ______. I could arrange to meet with you any day next week.
A:impressive
B:deliberate
C:ambiguou
D:flexible
在满足不等式组x-y+1≥0x+y-3≤0y≥0的平面点集中随机取一点Mx0,y0,设事件A=“y0<2x0”,那么事件A发生的概率是( )
神经调节的基本方式是____.
如图,已知AB=AC=AD,且AD∥BC,求证:∠C=2∠D.