温州智慧谷

It worries the couple ____ their daughter is eating less and less these daysA how B when C that D because请详细分析每个选项,我想问为什么不是D呢 函数y=- a/b x+c/b【c与a、b不同号】的图像不经过【 】 a.第一象限 b.第二象限 c.第三象限 d.第四象限 It worries the couple a lot _______ their only son is behaving worse and worse these days.A.how B.why C.that D.what选哪个,为何? Nick is their（ ）and Emma is their daughter单项选择题A.son B.girl c.cousin D.daughter随便说一说这一句话的中文意思,以及这个“Nick”在此句中是什么意思? It worries the couple a lot ______ their only son is behaving worse and worse thIt worries the couple a lot ______ their only son is behaving worse and worse these days.B.why C.that 选C ____any sign of their daughter"s school,the anxious couple turned to a policem for helpA.seeing not B.Not to have seen C.Not seeing D.Having not seen (请详细说明 什么是线性分子和非线性分子 常用的线性分子与非线性分子各有哪些? 怎么样区分线性分子和非线性分子 为什么cs2是线性分子 （1-2的平方分之1）（1-3的平方分之1）（1-4的平方分之1）•••（1-10的平方分之1） 求图片：已知x2-16x-1=0,试求下列各式的值.x2+x2分之1；x3-x3分之1 英语翻译It's an excellent Chinese cartoon,which tells the stories of happy sheep and gray wolf.The poor gray wolf is always trying hard to catch the sheep,but the sheep could always run away from the danger.The sheep are so clever and lovely that 喜洋洋与灰太狼的英文名究竟是什么?我在一本英语权威练习册上看到是happy sheep and gray wolf.可是官网 DO YOU KNOW THE YEAR IN ---- HE WAS BORN A.WHEN B.WHICH C.WHERE D.THAT NSK轴承都有哪些特点? NSK轴承的优点,好在,贵在什么地方 填上合适的词:( )薄弱 NSK轴承HJ332E,HJ332E的特点是什么? he ----there is much snow in norway these daysA：thinks B:is thinking C:thought D:was thinking 应该选哪个 我拿不准 为什么 关于中心对称（重合）是什么意思不是说两个图形位置、大小、都一样,可是一个图形旋转了180°了还怎么重合呢?定义说饶某一点旋转,这某一点是某些图形特定的某些点（比如说平行四边形 成中心对称的两个图形必须重合对吗 有几道英文题,1.英文选择There's______snow.A so many B much too C too much D too many.2.英文选择The best time___to Beiging is August.A come B to come C came D of come3.I want to be __a basketball player .____.(对划线部分进行提问 I dont know why he was late.这个句子里为什么用why不用that?我打错了　是Idont know the reason why he was late NSK轴承前置代号及后置代号的含义 I don't know the reason()he comes late.填写先行词 NSK轴承代号问题NSK轴承22211EAKE4与22211EAE4C3的后置代号是什么意思?（是否为压力角大小,保持架材质,游离间隙等请详细说明）.前者内径为啥比后者内径大了近十个丝（装在同一根轴上前者较松 NSK轴承7309B当中的B的含义是什么? x/240-x/280=2.. x-5分之x等于240求解, 650000*x(1+x)^240/((1+x)^240-1)=4112 求x. 我们经常看到训兽表演,训兽师问自己带来的狗:“2加2等于几?”狗立即叫的四声,