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发表于:2022-08-07
问题详情:与直线l:y=2x+3平行,且与圆x2+y2-2x-4y+4=0相切的直线方程是( ).A.x-y±=0 B.2x-y+=0C.2x-y-=0 ...
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发表于:2017-10-23
Aswiftrosesoundlelyovertheslateroofandtheheatshimmeredontheroughcastwalls.Wewillstrivetoexpandeconomiccooperationwithforeigncountries&national....
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发表于:2019-09-11
问题详情:与直线l:y=2x+3平行,且与圆x2+y2-2x-4y+4=0相切的直线方程是( )A.x-y±=0B.2x-y+=0 C.2x-y-=0 D.2x-y±=0【回答】D知识点:圆与方程题型:选择题...
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发表于:2017-01-05
经典语录我能作茧自缚,亦能化茧成蝶。不再沉默中爆发,就在沉默中灭亡。博物而约取,厚积而薄发喜欢一个人,是童真。爱一个人,是责任。...
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发表于:2017-08-25
ly-alterableROM"SublimeWords"isnotshowingshamefacedly,butreservedly.Thegroupfulfilledtheirdutiesassiduously.Clapthemsoft-ly,one,two,three.unceasing(ly);continuous(ly);f...
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发表于:2017-09-19
经典语录初夏的夜晚风微凉天空这屋檐下,我为你撑起整个世界,你为我奏响欢乐的乐章。属于我们的诗篇在那儿,注视是否每天践行着,回荡在耳畔的誓言。你我融为一体的灵魂,眺望这永恒的夜幕,寻找...