Could I speak to________is in charge of International Sales please?( )
A:who
B:what
C:whoever
D:whatever
医师、律师、演员对大烛台的反应的基本模式是什么?
已知双曲线 x2a2−y2b2=1 (a>0,b>0)的两条渐近线与抛物线y2=4x的准线分别交于A,B两点,O为坐标原点,若双曲线的离心率为2,则△AOB的面积为( )