计量仪器校准

i always play tennis with my friends on the playground.in a word,i lovemy school life 怎么翻译? our school is behind a factory的同义句______ ______ a factory______ _______ _______our school.(将上题改为同义句） our schooL is behind house.求同义 1.The hotel is behind our school.改为同义句 Our school is______ ______ ______ the hotel2.A week has seven days.改为同义句_____ _____ seven days in a week.3.Is there a pen in your bag?（作肯定回答）____,_____ ______.4.one,two,pen,penc our schooL is behind house.求同义句 Our school is behind the parker（改为同义句) 夜空想象作文500字面对浩瀚的星空和皎洁的月色,你肯定也有过无穷的遐思和美妙的想象：或是神秘的仙境,或是动人的故事.请将它们写下来,一定能打动人 在前100个自然数之和中,将不能被3和4除净的数相加,和是多少. 已知sina,cosa是关于x的二次方程2x^2+4kx+3k=0的两个实根,求实数k的值 设sina,cosa是二次方程3x^2-2x+m=0（m属于一切实数）的2个实根,a是第二象限角,求m的值 设sina,cosa是二次方程3x^2-2x+m=0（m属于一切实数）的2个实根,a是第二象限角（1）求m的值（2）求sin（π/4-a）的值 因式分解 xy-xz-y的平方+2yz-z的平方 289的算术平方根是多少 289的算术平方根是? Our English teacher worked late into the night,____the exam for the following wekks.A.to be prepared B.prepared C.preparing D.was preparing 怎么填为什么理由 out,the ,our ,plan,English,worked,fine,teacher,came up with组合成陈述句单词不的重复,标点已给出.是陈述句! 选词填空.He ________ following our teacher in English class.have trouble impress break off x^2+y^2+z^2+xy+xz+zy因式分解后是什么——在线等x^2+y^2+z^2+xy+xz+zy因式分解后是什么, 已知1/sinA,1/cosA是二次方程x^2-√2ax+a=0的两根,求tanA的值及A ps：已知1/sinA,1/cosA是二次方程x^2-√2ax+a=0的两根,求tanA的值及Aps：√2ax就是根号2乘以ax 改为同义句Mr Smith works as our English teacher in the school.Mr Smith ( ) in the school. Our English teacher‘s （ ）studies in our school,too. 英语 Welcome to our school Look!It is the teacher'soffice. Do you want to in the school piay?Hi a teacher.He teaches our English.错在哪怎么改 Our teacher asked us _______(remember)_______(bring)the English books to school.如题,应该填什么? Mrs Chen is our English teacher.She can speak several foreign languages ----English.(124.27)A.but B.besides C.except D.without Our,teacher,English,Rend,Mrs,is(.) 连词成句 Is Mrs Geen our English teacher?----No,she is t_ English teacher. Mrs.Green are/is our English teacher.are和is哪一个对 已知二次函数y=ax的平方+bx+c,当x=-1时有最小值-4,且图像在x轴上截得线段长为4,求函数解析式. 已知二次函数y=ax^2+bx+c的图像与y轴的交点为(0,2)且函数的最小值为-1/4,且方程ax^2+bx+c=0的两根平方和为求二次函数解析式 已知二次函数f(x)=ax平方+bx+c的图像与x轴有两个交点他们之间的距离为6对称轴x=3为且最小值 在等式y =ax的平方+ bx+c中x=1时y=4当x=2时y=-3当x=-1时y=0求abc的值