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一道二次函数与圆综合的题,OB:0D=1:3求圆O2半径 已知f(x)=x^2-6x+8,x属于[1,a] ,且f(x)的最小值为f(a),则实数a的取值范围________________望写明过程 “镭射唱片”中的“镭射”是一个英语单词的音译名,那么它的正式译名应该是 镭射唱片中的镭射是一个英语单词的音译名,那么它的正式译名应该是什么? 补全对话 _me,where is the _hospital,please?_me,where is the _hospital,please?B:Well,go_ this street and_the third turning_the right ,and you will find a gospital on the left side_that street.it is between a police station and a bookshop.A:How_is 为什么人们至今没有发现UFO? 为什么没有发现外星人? 为什么发现UFO不公布 See sb. beat /beating /beaten分别是什么意思? Sudanese government 是什么意思 恒星在天空的位置的变化是 a位置不变 b西升东落 c向西运动 d时东时西 恒星在天空中的变化位置是向东还是向西? 为什么色盲不能考驾照,我能分清红绿灯检查说是色盲,但我单个颜色看的话,都是能看清的,分清红绿灯绝对没问题,为什么不能考啊,还说想考了,得交400块钱,真是黑啊,这个规定是为了让某些人 色盲,分不清色盲测试仪上的小灯,但分得清红绿灯,想考驾照怎么办 探索规律,看下图 找规律怎么写 0.46,4在（ ）位上,6在（ ）位上是小数 求snippet词根词源 “医院”的英语是hospital,它是读“好死普提奥”还是“好死批涛” Liu Xiang _ won another match last month.He was a _(success)The doctor has done as much as he can _(save) the boy.You can't look down on the _(able).Bill is good at doing things and dealing with difficult things.He is _(practice.He seemed to have dif in hospital on hospital区别,在医院怎么说 为什么外国老看说看到外星人而我们中国又没看到过?是不是抄做? the earth's crust cooled 是习语吗 为什么把废水中的有机物归于同一类污染物,有哪几种表示浓度的方法,各自有何优缺点 带尧的字都有哪些 Noetic词根词源? hospital怎么读P 是发B 英语单词：hospital 怎么读,希望有音频我只要就音频就行了 金融的一道计算题,Cindy and Jennifer are twin sisters.They both have a $10,000 investment earning 7%.Cindy withdraws $2,000 of her money now and goes on a shopping spree.Jennifer keeps all her money invested.After 15 years,when each are lookin Early I searched through the earth for earth ware so as to research in earthquake. so as to research in earthquake 目的是为了研究地震这里的research后面为什么要用in?而不是用on? 3.Early I searched through the earth for earth ware so as to research in earthquake.请翻译并解释此句语法结构 我想当一个大学的教授,要经过一个怎样的过程?困不困难?如果在该专业比较突出,有点功绩（比如有好些个专利）会不会有些优势