已知二次函数y=-12(x-32)2+258的图象在坐标原点为O的直角坐标系中, 发布时间:2017-04-13 12:23 │ 来源:www.tikuol.com 题型:解答题 问题: 已知二次函数y=-12(x-32)2+258的图象在坐标原点为O的直角坐标系中,(1)设这个二次函数的图象与x轴的交点是A、B(B在点A右边),与y轴的交点是C,求A、B、C的坐标;(2)求证:△OAC∽△OCB.
题型:解答题 下列哪项结果提示动脉粥样硬化危险性增加()A.ApoAⅠ升高,ApoB降低B.ApoAⅠ降低,ApoB升高C.ApoAⅠ、ApoB都降低D.ApoAⅠ、ApoB都升高E.ApoAⅠ升高,ApoB不变 查看答案
题型:解答题 In the foreign trade business, the trade terms CFR is often used. CFR is the abbreviation for ______.A.Commercial InvoiceB.Cost, insurance and freightC.Cost and freightD.Carriage paid to 查看答案