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【简答题】
已知中心在，顶点 在 轴上，离心率为 的双曲线经过点 （I）求双曲线的方程； (II)动直线 经过 的重心 ，与双曲线交于不同的两点 ，问是否存在直线 使 平分线段 。试证明你的结论
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【简答题】经纬仪的检校主要有哪几项？
【单选题】The law firm Patrick worked for before he died filed for bankruptcy protection a year after his funeral. After his death, the firm's letterhead properly included him- Patrick S. Lanigan, 1954～1992. He...
A.
They all wanted to divorce their wives.
B.
They were all heavily involved in debts.
C.
They were all recovering from drinking.
D.
They had bought new homes, yachts, etc.
【单选题】TEXT D The law firm Patrick worked for before he died filed for bankruptcy protection a year after his funeral. After his death, the firm's letterhead properly included him: Patrick S. Lanigan, 1954-1...
A.
They all wanted to divorce their wives.
B.
They were all heavily involved in debts.
C.
They were all recovering from drinking.
D.
They had bought new homes, yachts, etc.
【简答题】Griffith worked for a firm that specialized in economic development in Washington D.C. because she needed money to pay for her debt.
【单选题】某用户在WWW浏览器地址栏内键入一个URL:http://www.zdxy.cn/index.htm,其中“/index.htm”代表
A.
协议类型
B.
用户名
C.
路径及文件名
D.
主机域名
【单选题】The law firm Patrick worked for before he died filed for bankruptcy protection a year after his funeral. After his death, the firm's letterhead properly included him: Patrick S. Lanigan, 1954-1992. He...
A.
They all wanted to divorce their wives.
B.
They were all heavily involved in debts.
C.
They were all recovering from drinking.
D.
They had bought new homes, yachts, etc.
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