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质量为M的卡车拖着质量为m的拖车在水平公路上匀速行驶,车子受到的阻力与车重成正比某时刻拖车与卡车脱离,之后,牵引力不变,经时间t司机才发现,立即关闭发动机,求拖车与卡车相继停止的 成语形容跑步的成语请给有解室和成语只要解释与成语成语的形容跑步的成语有哪些啊?! 用一个成语来形容杨时,是什么成语?还有这个成语的解释. 形容非常灵活 英语句子改错,有几句可能是对的1.I'm sure our team will be able to win their team.2.What a good news it is that China has sent up"Shenzhou VI'successfully!3.I'm sure man will able to stop Bird Flu.4.In all the coats,the girl chose the lea 改错 几句英语句子1.This trousers are Mike's.2.who' orange is this?3.Lucy is going shoping. 几句英语句子改错1 The house stand at the corner of the street was built in 19822 There was terrible noise followed the sudden burst of light 3 Most of the artists being invited to the party were from South Africa我要原因 几句英语改错题I left the noisy city,determining never to come back again.The problem is that where we can find him in such a short time.More attention should be paid to educate the young generation.Instead of using a credit card,I will pay for 质量为1.5t的汽车再前进中遇到的阻力是车重的0.05倍、汽车在水平地面上做匀加速直线运动、5s内速度36km/h赠至54km/h、求汽车所受牵引力的大小（g取10米每二次方秒） 一辆汽车质量为10^5kg,从静止开始运动,其阻力为车重的0.05倍,其牵引力的大小与车前进的距离变化关系..一辆汽车质量为10^5kg,从静止开始运动,其阻力为车重的0.05倍,其牵引力的大小与车前进的 和动物特点有关的发明创造我一点也看不懂 我要一种动物的介绍（包括形态结构特征,生活习性,生存环境等） 请你举出两个例子,说明动物有独特的适应环境的结构. 你所熟知的动物的生活习性有那些?动物是如何与其生活环境相适应的?不要太多 适量就OK 形容见闻不广,学识浅薄的成语 我们可以用哪些成语形容他们丰厚的学识本单元我们认识了孔子,福楼拜,莫泊桑,我们可以用（ ）,（ ）等成语来形容他们丰厚的学识. 几个英语句子改错1.When I add up all the eggs,I found that one was lost2.Ignored what others said and go on with your job3.There have been a series of accidents at this crossing recently4.Tom Hanks told his teacher that he had been born in 198 如果f(0)=a不等于0,函数f(x)可以是奇函数吗,可以是偶函数吗 为什么奇函数 f（0）一定等于0?而偶函数不能? 1.如图,一条街道的两个拐角△ ABC与△BCD均为150°,街道AB与CD平行吗?为什么? 若a大于0,且a不等于1,F（x）是偶函数,则函数g(x)=f(x)*log a^(x+√x^2+1）是 A奇函数B偶函数C非奇非偶函数D奇偶性与a的具体值有关 f（x）=1/x（x不等于0）是什么函数奇函数偶函数 扁形动物的生活习性、特点和用途是什么急求~~~~~~~~~~~~~! 从生活方式的不同来解释扁形动物3个纲在形态结构上的差异. 原生动物,腔肠动物,扁形动物,线形动物,环节动物,非种子植物,种子植物的形态,结构和功能求求大家能帮我解决只要回答非种子植物,种子植物的形态,结构和功能就行了 形容认真思考的成语 扁形动物的种类急,跪求.快 形容同学们尽力思考有哪些成语 形容“深入的思考”的成语 形容思考之后再行动的成语?有一个“而”字和“行”字 形容深入而反复地思索考虑的成语啊~ 几个英文句子改错1.In this camp,I met many new friends who were from different backgrounds.2.Although we might felt tired during some games,we really enjoyed them.3.Undoubtedly,you and I come to here for academic purpose.4.For example,learning