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發表於:2019-09-11
問題詳情:與直線l:y=2x+3平行,且與圓x2+y2-2x-4y+4=0相切的直線方程是( )A.x-y±=0B.2x-y+=0 C.2x-y-=0 D.2x-y±=0【回答】D知識點:圓與方程題型:選擇題...
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發表於:2017-10-23
Aswiftrosesoundlelyovertheslateroofandtheheatshimmeredontheroughcastwalls.Wewillstrivetoexpandeconomiccooperationwithforeigncountries&national....
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發表於:2017-08-25
ly-alterableROM"SublimeWords"isnotshowingshamefacedly,butreservedly.Thegroupfulfilledtheirdutiesassiduously.Clapthemsoft-ly,one,two,three.unceasing(ly);continuous(ly);f...
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發表於:2017-01-05
經典語錄我能作繭自縛,亦能化繭成蝶。不再沉默中爆發,就在沉默中滅亡。博物而約取,厚積而薄發喜歡一個人,是童真。愛一個人,是責任。...
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發表於:2022-08-07
問題詳情:與直線l:y=2x+3平行,且與圓x2+y2-2x-4y+4=0相切的直線方程是( ).A.x-y±=0 B.2x-y+=0C.2x-y-=0 ...