道路机械清扫作业标准

请问I have no friends ____you here.Really?选besides还是except或but 加部首,组词 what do you usually do at weekends?at weekends为什么不用介词on “what kind of dinner do you eat at Christmas Day ”句中的“Christmas Day”为什麼不用on ,而用at? 光是以什么形式传播的? 光以什么形式传播 光以什么的形式传播 Although he is vevy busy,but he often helps us.哪里错了? 光以什么形式传播的 I often clean our ciassroom with tom after school,改为同义句 Tom and I often do our homeworks(哪里错了,帮我改正过来） 光在水里沿什么传播 I often talk to my friend (on the Internet)括号部分提问 We often （talk to her on the Internet）.（括号部分提问） 请完成下面的调查问卷 1、Do you use the Internet to send e-mails? If yes, how often——1、Do you use the Internet to send e-mails?If yes, how often—— yes no2、Do you uae the Internet for other reasons?If yes, wh 高温铁铬铝钼（0Cr27Al7Mo2)适合炼什么钢? 我用的igbt型号是h20r1202,标准Vg是5.8伏.我把5.8伏正极接g极,负极接e极.然后把c极和led和100欧电阻和e极串联.正在的情况是,打开g极的5.8伏电源,led立马亮.但关闭g极的电源,led缓慢变暗.这是问什么? Paul doesn't have to be made( ).He is always a hard-working student.选择[a] study [b] to study [c]studied [d] studying请说明理由为什么选它注意这个句子是一个被动语态的句子呀?到底选什么呢? Paul doesn't have to be made ().He always works hardA.learn B.to learn C.learned D.learning Simon doesn't have to be made __.He always works hard.A.learn B.to learn C.learned D.learning请高手给个确切的答案,再讲下其中的语法知识. Paul doesn't have to be made _____(learn). 跨越速运的 ky-express 这个英文要如何去读?我不会这个英文,你们最好回答的时候给我配上中文 请问express怎么读?用中文标出谐音好吗? S丶ky for example 与such as 如何用急求 谢谢 such as与for example 的区别 肖像,语言,心理,细节描写片段,150字左右.相关要求见详细描述1.肖像描写：一个孩子对妈妈撒娇2.动作描写：人们挤公交过程中的动作3.语言描写：蛮横城市女青年踩到老实乡下农民的脚4.心理 富士IGBT与三菱IGBT哪个好 感应加热电源IGBT是不是拆机件怎么判断 __by the earthquake,many villages and countries in Sichuan Province had to be rebuiltA.Destroyed B.To be destroyed C.Being destroyed D.are in great needs of 一样型号 IGBT模块和普通IGBT的区别,主要不同在哪里,里面的芯片大小一样吗,模块的发果上面标150A能达到150A吗? The soldier gave his life ---- the student's life in the earthquake in SichuanA.to save B.to saving C.save D.saving