青春ppt作业

电学计算题,题：穿过线圈的磁通在 0.2S 内,均匀地由零增加到 1.8 X 10 - 3平方wb ,线圈捆数为 2X10 2平方 ,求线圈中产生的感应电动势. 若函数f(x)=ax+b/x²+1的值域为[-1,4],求实数a,b的值 My wallet is nowhere to be found.I ___________ in the store.A.drops B.must have dropped it C.dropped D.dropping My watch is nowhere to be found,I must have dropped it when I was on the bus为什么是to be found 数学教学方法有哪些? the book I_____the other day can be found nowhere.a. borrow b. borrowed c. has borrowed d. had borrowed选什么?borrow可以用完成时吗 He is nowhere to be found. 这句话是什么意思 数学的教学方法 关于数学教学方法? 数学概念教学方法具体是什么? 61的负二次方减去60的负二次方的平方根 X的平方-61X+60=0,怎么求出X=二分之一61±√61的平方-340.教下我公式法 谁能帮我找些人教小学数学同步教学方法 设x>=0,若函数f(x)=x+a/根号下x+1有最小值,求实数a的范围并求出此最小值 98万平方米等于多少亩 42.61万平方米等于几亩 102的二次方+98的二次方等于几 为什么新西兰地震火山活动频繁? It is easy to between Beijing to New York because of the plane快,明天就要交了!It is easy to t－－－－－ between Beijing to New York because of the plane 【连词成句】change,haircut,time,to,your,is,it,is,style,it,of,because,out. It's easy for us _____ to Hangzhou because of the subway.A.to getB.gettingC.getD.gets When I got to the shop.I found it ___ (close). 1 你能根据下面的信息算出金字塔的实际高度吗?测量结果：竹竿5米,它的影长3米；金字塔影长87.9米.你能想办法知道比它低3米的第二大金字塔的影长是多少米吗?2 A、B之间路程分成上坡、下 when they arrived there ,they found some foreigner (shop)in the store when I got there,I found the farm tools_____.(repair) 1.一台电视机的原价是960元,现在售价是720元,现价比原价降低了百分之几?2.小明骑一辆自行车,车轮的外直径是0.6米,如果车轮每分钟转100周,从家骑到学校要用15分钟,小明从家到学校的路程大约 When I got to the cinema,I found she,__(too,also)was there.选括号内一词并用其适当形式 there was ( ) sudden change in the weather and the rain came pouring downA aB the C /D some这句话的意思是什么 求：2010年度六年级数学教学计划 The elderly need spicial care in winter ,as they are __to sudden change of wA sensitive B sensible C flexible D positive 一道英语选择题.___________________________ for the elderly,the need to take it for walks may be___________________________ for the elderly,the need to take it for walks may be a disadvantage.A.However a dog may be a good companion B.Whatever a they need to change their clothes because they_ A.are all wet B.all are wet C.all wetD.all wetted