广联达造价软件作业
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1.曲线y=cx^2所满足的一阶微分方程是什么?2.微分方程xy"—y'=0满足条件y'(1)=1,y(1)=1/2的解是?3.设x1,x2,……xn为来自正态分布N(μ,δ^2)的样本,μ为参数则( )是一个统计量.{这是个选择
the boy__________(not finish)his homework yet.
1、He has already finish his homework.(改为否定句) He — finish his homework —.2、Both of his parents were pleased with th result.改为完全否定句— — — — — pleased with th result.
请问哪里有卖折叠衣柜的,
计算2,3,4,4,4,5,6的平均数和标准差.
He spent an hour reaging Chinese yesterday.改同义句
The meeting ——(持续) about an hour yesterday.
世界上最大的岛国是?
氧化铝用哪个英文的单词里表达,书面口语都说一下
与直线12X+5Y+3=0平行的圆x^2+y^2+2x+2y-7=0的切线方程是什么
英语中有很多表示“一些”“许多”的词,请列举,并说说它们的不同最好能举例字!
口语英语中的表示“口语”有个好像是orial的单词是?
At the moment of conception,you spent about half an hour as a single cell.请问这句的意思,关于人体的.人体在受孕的那一刻.我很奇怪的是为什么是造一个胚胎的单细胞要在受孕的时候呢?女人不是有月经的
英语翻译
he spent about 21 hours in space 对 about 21 hours 提问
把一个圆柱底面直径是2分米、高是3分米 求侧面积
差的英文单词是什么
已知|a|=2,|b|=根号2,a与b夹角为45度,要使kb-a与a垂直,则k=?
They asked me___ last night ,but I was unable to tell them.A.What was happened B.what happened C.was what happened D.what it happened请说明原因
判断题:一个圆柱的底面周长不变,高扩大到原来的两倍,它的侧面积就扩大到原来的4倍.()
中度脱水的临床表现,下列哪项是错误的 A.精神萎靡或烦躁不安 B.皮肤弹性较差 C.眼窝、前囟明显凹陷 D.四肢厥冷、血压下降 E.哭时泪少,尿量减少 本题正确答案:D 题解:中度脱水表现为:
What _____ you _____ yesterday?We ______ our homework.(do) .What did you do yesterday?后面这句是"We did our homework.",还是"We were doing our homework."呢?
I asked them what they t_______ about the movie.
asked them what they t after movies填什么?T后I asked
We get the ______(freeze) fish from the shop.
求下列曲线在给定点的切线以及法线方程:y=sinx,(3/2 π,-1)
He asked me if I was coming the next day.
他问我第二天你是否会来这里. He asked me ____ you ____ ____ the next day.
he asked me what i _____(will) do the next day
Mother asked me where I____the next day.A.would goB.will goC.am goingD.went
i want to give them ()time answer the phonea little a lot little few
on the newspaper还是in the newspaper