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一种零件长5毫米,把它画比例尺是10：1的图纸上,应画（ ）厘米? 一个零件的长度是1.5厘米,画到一张比例尺是12:1的图纸上,要画多少分米? When a post office handles large quantities of mail daily,it is essential that mechanical methods are used to maintain production and ensure prompt delivery of the mails答案说are used 要改成 be used 为什么? 一道英语改错题Before he was a teacher,Bob told me what he 1.would like to be a lawyer when he was at school.2.He had worked very hard at his lessons and tired 3.enter into a famous university,but something unhappy 4.happened in his family,that compare with life on earth ,life on Mars will be better in many ways meals on Mars will probably in the form of pills every students will have a computer at home connect to an inter-planetary networkscientists will develop plants can grow on Mars （ ）___ 1 I A(can't) B(study) because she C(makes) D(much too) noise( ) ___ 2 A A(noise) classroom B(is not) good C(for) our D(study)( ) ___ 3 A(peter and I) are B(interesting) in C(feeding) D(animals)( ) ___ 4 The pet A(with) long ears B(eat) C(a 形容遇到危险时神态沉着冷静的成语是?形容遇到危险时神态沉着镇定.（ ）根据意思填词. 英语好的请看一下下面的两道改错题!@The great writer died for 4 years.This is so an amazing thing. 改错,哪位英语好德,赶快来帮下忙,一、判断下列句子是否正确,不正确的请改正.1.I was looking television at 5 p.m.this afternoon.2.What are you looking,Jim?3.You need a appointment if you want to see the dentist.4.I can wait 英语改错、、英语高手帮下忙 To my opinion,there are advantages and disadvantages traveling either by plane andby train.Travel by plane is time-saving ,comfortably,and you can have a good rest on the trip,but it is too expensive .Unless yo 形容看书快的成语 长2毫米的零件,把它按50:1的比例尺画在图纸上,应画多少厘米长帮个忙 给下面一段英语改错Today is monday,because sunday is overtime.so today is very tird.Today for me is pleasure,Mr.Gao called me yesterday night ,although only a little word,but for me,it is enough.For Mr.Gao,i think I love he.for his childish c 表现美好风光的成语至少三个 表现美好风光的成语有哪些 写出表现美好景色的成语 表现美好景色的成语非官方化工 谁能告诉我几个写表现美好风光的成语 在比例尺是5：1的图纸上,量得一种零件的长是2.5分米,这种零件的实际长度是（） 一个零件的长度是6.5毫米,画在一幅图上的长度是1.3分米,这幅图的比例尺是多少? 形容受益很多的成语 函数的性质图象 要点的总结我修的是人民教育出版社的普高课程标准实验教科书 一个零件长4毫米,画在图纸上长20厘米,这张图纸的比例尺是多少?还是算式说一下 高中数学函数的性质那一章如何去归纳总结?主要是对解题方法的总结……我很模糊 要有难度的那些,如奇偶,对钩等各类函数概念,应用等总结最好能有例题 高中数学函数有关知识的整理总结最好友例题哪找的到? 形容经过多次失败后成功的成语或事迹! 证明级数tan（π/4n）的收敛性 形容历经坎河苦难的成语 “指经历长期的忧愁患难的生活.”的成语是什么?要带有“饱”字的,知道的请回答.不是“饱经风霜”.再仔细想想.说得好,我会提高悬赏的. 形容历经坎坷苦难的成语 高中数学函数的图像和性质设f(x)=lg(10^x+1)+ax是偶函数,g(x)=(4^x-b) /2^x是奇函数,那么a+b的值是多少?