假设某厂商的短期成本函数MC=3Q²-12Q+10，当Q=5时，总成本TC=55.

英语中的prep是复数的意思吗?？ 英语复数的概念、实例.求专家小数考虑吗?说是二以上的是复数,可是像1.5、1.45什么的怎么办呢?比如说一个半的苹果?或者0.8之类呢?还有负数二以上怎么办呢? 英语中名词单复数到底什么意思为什么看了好多书还是没有彻底的看明白是什么意思呢?这里有一道题请帮我分析一下:Mathematics as well as physics always___me a lot if headaches. A.has caused B.are causing C.cau 为什么在word中打了标点之后鼠标在标点之前,再打字就把标点消掉了? in the past term 和 in the last term 区别希望能出权威解释,有例句,回答完整的追加得分,谢谢 天天有人说博客这个词,不要笑话我啊 "博客"一词的来源,以及真正意义是什么? 帮忙写篇英语作文 题目是How to choose a High-Quality Garment?字数80左右就行,不要多了,多了背不下,尽量用些简单的句子, 博客这个词是怎么来的．具体含义是什么 我也要一篇How to choose a Hight-Quality Garment? I am the o___daughter in my family.Every mother l____her child.I am the o___daughter in my family.Every mother l____her child.His mother is a d___ at a hospital.My sister is a w____ in a factory.We often read books in the l___.顺便把意思告诉 1、my family has tree children and i am the t__ child of my family.2、they plant __ trees in spring.A、million ofB、millions ofC、five millionsD、million3、 i use the internet mainly for sending e-mail __ (a spoken or written piece of informat Grow old along with me,the best is yet to be.好像说是一个八字词语,,,有知道的吗? 田忌赛马主要讲了什么? 复数.讲解也要若关于x的实系数一元二次方程x2+px+q=0有一个根为1+i,则q=_____.结果和讲解、、、 宇宙大爆炸没有空间是一个什么概念?没有空间能在里面动吗.现在科技水平能制造没有空间的空间吧.真空可以制造. grow old along with me the best is yet to best 英语翻译Grow old along with me,the best is yet to be.谁能不百度,. 宇宙大爆炸前没有空间是说空间没有意义还是说根本没有,不能容纳东西 grow old along whith me,the best is yet to be 中文翻译 Stranger think I was quiet,my friends think I am very cheerful,my best friend know that I is a lu listen!i hear someone.the violin in the room A watching B watches C will watch D watch have to 与need to 的区别,急 急 A barking dog seldom bites.的句子成分 Why don't you take a walk now?同义句转换_____ _____taking a walk now? Barking dog seldom bite.的谚语是什么 是Where did you read a book yesterday?还是Where were you read a book yesterday?还有,是who was practice guitar yesterday?还是who did practice yesterday? let's take photos at the (g ) of the park 补全句子 He works in a TV station.He is a r_____ a h_____ works in a TV station, he works in a police station.急 Daniel (write) the letter for two hours.how long you (learn) english?For three yearsarrive的过去分词in/on/by the in a ——（alone,lonely）house