音调和音色的区别

一些大题总有一两步看不懂, 什么是金属丝线绕电阻?是不是只有大功率电阻是绕线电阻?如题~ 电子知识：金属膜电阻和金属氧化膜电阻有什么区别? does he clean up his room first his friend wanted to know?宾语复合句 plan b的she said谁能帮我找一下Plan B唱的she said 的歌词~最好附带翻译的... 高中数学,跪求解答,完全看不懂题目!设a1,a2,...,a20是首项为1,公比为2的等比数列b1,b2,b3,...,bn,由bn= 确定,记M= ,则M的最小值为? 这种题看不懂 The child is too young to go to school.变成The child is so____ ______ ______ to go to school.的形式 广州哪里可以买到电容器,电阻,蓄电池,线圈这类东西? 常规放大电路的电阻电容应选多大的 某人向一目标射击四次,每次击中目标的概率为1/3.该目标分为三个不同部分,第一,二,三部分面积比为1：3：6,击中目标时,击中任何一部分的概率与其面积呈正比.问：若该目标被击中两次,A表示 高二数学要用高一的哪些知识 高一与高二数学联系大吗?我该升高二了,可高一数学没怎么学,正在纠结暑假还补习高一还是高二的数学 高一数学有哪些知识与高二数学有关 我现在上高二数学连高一也不会怎麽办?谢谢 义乌高二数学家教哪个好, 电阻单位的进率,我晕了, 英语完形填空（速度）帮我翻译,还有帮我把句子里的语法什么的找出来```好的再加分,谢谢!Not long ago I answered a telephone call from an old friend . He didn't 1 me for a long time "Hi Steve" he said:" I just want to Mr.Klein told the class that a new student,Inez,would join them soon.He 31 that Inez was deaf.She “talked” with others by using sign language.Mr.Klein knew sign language,and he decided to teach 32 students so that they could also “talk with Ine 英语完形填空,The city of Hangzhou is in the southest of china.It is f_____ for its beautiful Weat Lake with a long h_____.When you come to this m_____ city,you will se many parks and some beautiful places a____the West Lake.When it is the hoild 英语完形填空 急 Send Me to the Police StationMr．Brown was good at singing． 31 he found work in a schoo1．There he taught thestudents 32 ．He worked hard and most of his students sang 33 ．But he liked drinkingand 34 much money on it．S 英语完形填空,速度求答案Tangshan, 1976. Two seven-year-old twin children were found under the rubble(瓦砾) of the terrible earthquake (地震). The rescue team said 16 they saved one child, rescue team said 17 they saved o 剑桥少儿英语一共几级? 剑桥少儿英语怎么样 请帮忙解答英语阅读试题The third meaning of the term “foreign exchange” is that it covers,in a general way,the rates at which foreign exchange is quoted.句中的cover等于以下哪个词:A.removes B.conceals C.reports D.treats 请帮忙解答英语阅读试题3In modern industry,water fulfills several essential functionsessential等于:A.ideal B.actual C.compulsory D.necessary （英语）选择答语. There are only some apples foreign visitors could be only( )in some large citiesA.seeB.seeing C.sawD.seen only some of the webs are good for he children同义句转换 —— —— the webs are good for children 怎么注册剑桥少儿英语账号不是卡号是账号 剑桥少儿英语 注册卡卡号问题我去注册 要求输入10位注册卡卡号,可我的注册卡卡号有16位! 这是怎么回事? 那10位数字到底是什么?