智能安全带高空作业

已知一次函数f(x)=(m^2-1)x+m^2-3m+2,若f(x)是减函数,且f(x)=0, 若f（x）≥x^2,求x的取值范围 为什么魏晋南北朝时很多人名字带有之字?如王羲之,王献之,刘牢之,司马休之等等,太多了 BE动词题刚写英语大家帮我做下Be动词练习题1.There ________ (be)many monkeys in the mountain.2.There_________(be)a beautiful garden in our school.3.There _________(be)some water in the glass.4.There __________(be)some bread on the tabl be动词的一题running and swimming good for youA:be B:is C:are D:maybe说清楚点 我想理解下 tan40和sin40是多少请告知tan40\sin40的数值 tan40° sin40° 值是多少? 1.The students began playing games(保持原意)The students began( )( )games2.Fangfang couldn't speak French( )(fluent)(适当形式)3.There was ( )in his country last autumn.(hungry)(适当形式) 1:The robots was not allowed to a____ their owners to the stores to buy things.横线处以开头字母提示写出单词 2:i have learned to a____ to my new life.3:he nodded with s___.4:Premier Wen is a___ to the whole people.5:Claire thought it was My aunt is busy,she has to look after her baby.It's only three months old.为什么用“it”? 一道初二英语题.快,火急!补全对话,每空一词.A:Jim,are you ______ tomorrow evening?B:I think ______.Why?A:would you like to come for ______?B:oh,thank you!I would love to.But Imust ask my parents________. What ______shall I come?A:We _ 样方法是调查种群丰富度还是种群的数量?样方法呢? 已知f(x)=(-3m+6)x+1在R上是减函数,求M的范围 已知函数f(x)在【-2,+∞）为减函数,且有f(2-m)＞f(3m-1),则m的取值范围是如题 照样子写词语：哈哈笑 （）（）下 哈哈笑 呜呜叫 这样的词还有什么? 照样子,填词语:哈哈笑 ()()耳 明天就要叫给老师啦 照样子写词语,如哈哈笑 小明的生活片段早晨,为了不迟到.趁交警不注意闯了红灯数学课测验考的很不理想.觉得自己什么都不如别人买了劣质商品后,与售货员协商,未果,准备向消协投诉答应了同学出黑板报,放弃看球 二十题答案及过程 打勾的两题,怎么写? 各位帮帮忙打勾的第三题怎么写? 霄怎么组词? 霄能组什么词?要两个! 野外蝴蝶种群密度的调查方法,随便说下理由 ”霄“怎么组词 霄字能组什么词,要三个哦! 康德是近代哲学史上划时代的哲学家,是因为? 用霄组2个词 ( )1.I’m thirsty .Please ____me a bottle of water.A.take B.carry C.pull D.bring( )2.I hope you can ______me.A.agree with B.agree about C.agree to D.agree on( )3.The scientist is very modest.He never______.A.show off B.shows on C.shows off D.show on 怎么分析植物种群特征,我有具体数据但不会分析 歌词结尾大概是i will follow you to the door 求歌名歌词中结尾大概是i will follow you to the door 男生唱的英文歌 伴奏是吉他 求歌名 《共产党宣言》 到底说了什么?