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已知:抛物线y=-x 2 +4x-3与x轴相交于A、B两点(A点在B点的左侧),顶点为P。 (1)求A、B、P三点坐标; (2)在下面的直角坐标系内画出此抛物线的简图,并根据简图写出当x取,函数值y大于零; (3)确定此抛物线与直线y=-2x+6公共点的个数,并说明理由。
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【简答题】Which paragraph contains the above information? [仅填数字] Fill in the blanks with the corresponding paragraph numbers. 1. Industrial revolution further shrank the world in the 19th century, and made the ...
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【判断题】当各部门的储蓄倾向相同时,国民收入的分配结构不会影响国民储蓄的规模。()
A.
正确
B.
错误
【多选题】地区定价的形式有( )
A.
FOB原产地定价
B.
分区定价
C.
补充产品定价
D.
基点定价
E.
运费免收定价
【单选题】S1:The ship ahead of us seems to have reduced its speed. Third mate, what is our distance from the ship?S2:three miles, captain. Her speed is 11 knots. She has slowed down a bit. We are getting closer...
A.
The ship ahead of them reduced speed.
B.
The ship ahead of them increased speed.
C.
The ship ahead of them changed course to starboard.
D.
The ship ahead of them changed course to port side.
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【判断题】The age of constitutional monarchy began after the Glorious Revolution. _________
A.
正确
B.
错误
【简答题】写读书笔记或读后感,要求3000字左右,大家可以选择三个题目,每个1000字。也可以自主选择题目。作业截止日期:1月19日22点,希望尽快上传文档。 参考题目:1.《一千零一夜》读后感 2.《卡里莱和笛木乃》读后感 3. 中东和平进程之我见 4.阿拉伯伊斯兰文化对世界文化的卓越贡献 5. 我的阿语梦 6.一带一路对阿拉伯和中国的机遇 7.阿拉伯文化之我见 8. 历史上的中阿关系 9. 我眼中的伊斯...
【多选题】地区定价的形式有______等。
A.
FOB原产地定价    
B.
分区定价
C.
补充产品定价    
D.
基点定价
E.
运费免收定价
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