设坐标原点为O,抛物线y2=2x与过焦点的直线交于A,B两点,则OA•OB=__ 发布时间:2017-04-30 13:04 │ 来源:www.tikuol.com 题型:填空题 问题: 设坐标原点为O,抛物线y2=2x与过焦点的直线交于A,B两点,则OA•OB=______.
题型:填空题 It is one thing to enjoy listening to good music, but it is ________ another to play it well yourself. [ ]A. quite B. veryC. rather D. much 查看答案