有一份稿件甲8小时打完乙6小时打完丙4小时打完3人一起多久打完

物理报纸提问——计算题!急急急!利用如图4所示的装置,用40N的拉力使物体匀速上升,不记绳重和摩擦,整个装置的机械效率为 百分之75 ,求物体和动滑轮的重各是多少?若绳能承受的最大拉力为5 she is in a green coat,这句话是主系表结构吗? 他一直很快乐,she is的结构. but pets are so good at making people happy翻译,十秒钟,快 Nowadays cats are no longer good at(e )mice,they would rather be people is pets 英语在线翻译 mushroom rressed mushroom是什么形式 求“现在我要你做我生命里的局外人.”英文翻译. 用所给词的正确行使填空 Please call_____(my)at 592866.This book is mine .IS that____(your)?Are_____(you)_____(I) syudents? countable noun[可数名词】与uncountable noun[不可数名词】,有什么区别.它们分别是什麽含义急啊 mushroom是什么意思 mushroom什么意思? 为人要诚实、守信用.翻译成英语 work的反义词? 是on fifth floor还是on the fifth floor? 3．I’m playing the football in the playground .I’m playing the football in the playground .(对in the playground 提问） the ___ cup of tea 中间能加什么形容词如题 a cup of tea a day keeps the trouble away是什么意思?在线等 急等~~ It`s (t______ ) to have a cup of tea ,says the cat. 不得不承认 英文怎么说 this is a tv that is expensive 用汉语怎么说(语法翻译) “尽管获得市场认可,但并未在市场上取得过话语权”英文如何表达这意思?详细的问题说明,有助于回答者给出准确的答案 求英语短文what do you think makes China so special? Liu Tao is playing football in the playground.Liu Tao in the What did he do just now?改否定句 She was reading books then.改否定疑问句 I’m new here的意思 Hi ,I'm new here.翻译过来 ___exciting movie Avatar(阿凡达）is!选哪个?A.what B.what a C.how They all say Avatar is a good movie which is worth ---second timeA,seeing the B,to see a C,seeing a D,being seen the 要详解 make chinese friends.hi everyone i have been living in china more than one year the days i spent a lot of time working i dont have time to make any chinese friends.now my birthday arrived but nobody come to my party i feel sad all the day i feel lone I'm new here,____ I dou't know where the Shenzhen City Museum is.空格里是写 and,but,还是so? He is new here.He needs______(buy)a map of the city