判断摩擦力方向6种方法

-The food here is nice enough-My friend _me a right piace _上填什么啊如果方便 顺便翻译下 中四次出海经历(船号是什么、原因、经过、结果) 1阅读《鲁滨孙漂流记》记录：具体概括鲁滨孙四次出海经历（含乘坐的船号)出海原因、经过、结果）阅读《西游记》记录：孙悟空、唐僧、八戒、沙僧四个人的主要经历（含人物姓名、佛 鲁宾逊漂流记中‘我’为了生存采取了哪些措施 be ＿ (please) with nice to be I always confident about myself本人是个高中生.300字左右,只要围绕I AM CONFIDENT来写 就好了!感激不尽! 没考号,怎样查英语4级的成绩? 急!~为什么我输入准考号查不到四级成绩. 求一个与“礼物”谐音的英文名. ＿autumn,I can fly the kite. 鲁宾逊在岛上生活了多少年 鲁滨逊在岛上生活了多长时间 I can do nothing for you , I am not good at math 谁知道这是什么意思了 鲁滨孙在岛上生活了几年 鲁滨逊到底在岛上活了多少年?这个答案会不一致! I lost my interest in math.What should I do? she shouldn't forget to do her homework改为同义句：she () () () () to do her homework在空格内填空 during the last four-and-twenty hours has held a steady coursefour-and-twenty hours 这是怎么个表达方式,希望大神们帮我答疑一下. 鲁滨孙在岛上生活了几年? 帮我查个四级分,511325199112240013 考号：510050102122005英语四级我现在不能上电脑， 亲,可以帮我查下四级考号吗,我的给忘了.张鑫园 山西大同大学 Chinese反义词是maths吗错了，是对应词 what "refer to sb" means? 所有字都有反义词吗 是不是所有词都有反义词? +file+not+found怎么解决 ________2010 in China ,the number of students ________to study art is rising a lot.A.Compared with; choosing B.Comparing to; choose C.Comparing with; chosen D.Compared to; choosing The number of college students in China_ gre atly since 1990A has increased B have increased C are increased D was increased eclipse中的Class File Editor Source not foundThe Source attachment does not contain the source for the file jdbcOdbcDriver.class.这个问题这么解决,已经困惑了好久, source not found我在Struts2.0框架下 编了一个JSP（传递给Action处理器的） 但是每次我用TOMCAT6.0 running的时候 总时自动的测试 报一个CLASS FILE EDITOR SOURCE NOT FOUND错误 我的TOMCAT是正常的 因为我跑别的 安装coreldraw12的时候,出现error 1311 source file not found,请高手指教．如题,