直线l：y=kx+1与双曲线C：2x2-y2=1的右支交于不同的两点A、B，（

发布时间：2017-04-30 03:30 │ 来源：www.tikuol.com

题型：解答题

问题：

直线l：y=kx+1与双曲线C：2x²-y²=1的右支交于不同的两点A、B，

（Ⅰ）求实数k的取值范围；

（Ⅱ）是否存在实数k，使得以线段AB为直径的圆经过双曲线C的右焦点F？若存在，求出k的值；若不存在，说明理由。

考点：直线与双曲线的应用圆的标准方程与一般方程

题型：解答题

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手腕部^99mTc-MDP骨显像最好选用的准直器是（）。

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B.针孔型准直器

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有关雄激素治疗子宫肌瘤，下列说法正确的有（）

A.可对抗雌激素，使子宫内膜萎缩

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下列关于本币市场应急服务的说法正确的有（）

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C、申请应急报价服务应填写相应的《应急报价发送/修改/撤销申请单》

D、交易双方申请应急成交服务应由某一方填写相应的《应急成交申请单》

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A、②④

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D、②③

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