杭州西湖喷泉时间2018

什么类型的电机,电机铭牌上不标示额定电流 一个高中集合的概念题哦试说明下列合集的含义：A={x/y=x²+2x-1,x∈R}B={y/y=x²+2x-1,x∈R}C={(x,y)/y=x²+2x-1,x∈R}D={s/s=t²+2t-1,t∈R}我觉得前2个和最后一个意义一样啊 英语改错 有10处the day when my life changed the better was the day when i had met killian,my dog.on entering apet shops,iwas soon attracted by this little dog,knowing as the king of dogs.i would usual lie down on the floor ang he would lie down 英语改错10处My aunt lives in a village far from my town.Last year she came to visit us,brought me a little dog for a birthday present.It was a little black dog with white spots.It was such lovely that I liked it at once.Every day after school I 这个喵星人是什么品种? 英文改错 10处You will never guess what I saw on this weekend.I saw a dog show.Dad and I was going to the park to fly a kite.When Dad and I walked up to the park,we saw dog everywhere.Big dogs,little dogs,old dogs,and young dogs were all run arou 他很聪明,知道如何多赚钱?把它翻译成英文/ 现在的空调都流行变频,有什么不一样? 落实措施 英文怎么说 用英文来描述距离有哪几种方式 英语用适当的形式完成句子 计算1-2+3-4+5-6+...+95-96+97急求,谢谢 计算1-2+3-4+5-6.+95-96+97一定要过程 使用函数调用编写程序,计算1×1+2×2+3×3+……+n×n的值.（要求编写两个函数,其中f1求平方,f2求和.怎么做 C语言编程:定义两个函数,功能是分别求出某个整数的平方值和立方值.但是除了这一种还有没有其他的答案呢? 孔子教子的译文我在线等急用今天就要 孔子教子 译文内容有 尝独立,鲤趋而过庭.曰：学诗乎?.我在线等急用今天就要 孔子教子的加点字谁知道 什么是埃舍尔的怪圈? 孔子教子原文：（子）尝独立,鲤趋而过庭.曰：“学诗乎?”对曰：“未也”.对曰：“不学诗,无以言.”鲤退而学诗.他日,又独立,鲤趋而过庭.曰：“学礼乎?”对曰：“未也”.对曰：“不学礼, 埃舍尔的矛盾空间如何解释 “埃舍尔的怪圈”是什么意思? 什么是 埃舍尔效应 C语言中.什么是符号函数.我遇到一个问题.让我定义一个符号函数.例如：y=1 (x>0)y=0 (x=0)y=-1 (x 狼和羊的过河问题一个人带三只狼和三只羊过河,一条船可容两只动物,没人在时,如果狼的数量不少于羊的数量就会吃掉羊,如何安全渡河先带两只羊过去,那这边还剩一只羊和三只狼,又没人在, 狼和羊过河问题六只羊和六条狼要过河,船上最多每次只能运输三只动物,每次过河时,不能使岸边的羊少于狼的,即数量要大于等于狼,要不然羊就会被狼吃掉,请问怎么过法啊 英语翻译保罗比其他人都外向得多paul is( )( )more outgoing than the others in his class 我喜欢根兴趣相投的人交朋友 英语改错（大致看一下语法有没有问题）Nowadays,we havemany access to kinds of delicious food all over the world.There are quantitiesof differences in the way of cook between China and America.Americans preferusing oven to cook their m (4m－9n)＋8(－3mn) 英文语法改错THE GIRL WHO CALLS AIMEILIN WILL BECAME TO BE MY WIFE IN 2 YEARS AGO那我要怎么改? 英文 语法 改错Some of workers (who resent) the supervisor's authority (would probably) feel uncomforable (if) they were to acquire the independence that （they demand). 括号内为题目中提供的有可能错误的部分,答案是都没错 1/4m^2+3mn+9n x^6-10x^3+25 -x^2-4y^2+4xy因式分解哦～～嘿嘿,没有那个平方啊