倒数方程的拐点

我想知道木工带锯机的使用常识及怎样保养,以及怎.还有,锯条经常断样使锯条更锋利,更好用 mr smith,there is a man at _the__front dorr who says he has _\__news for you of great importance为什么冠词是这么用的呢? Who is the man in a u is that man,___ in the front row A the one B the first为什么A不行 Sun ,there is a man at the front door who says he has ____news for you of great importanceA 不填B the There is nothing to fear but fear itself.求翻译这句话,谁感兴趣的回答下 锯条如何安装手锯的锯条安装时,锯齿的朝向? 手锯固定锯条的叫什么 "I am going to the cinema."可以写成“I am going to go to the cinema.为什么? "I am going to the cinema."属于一般将来时的哪一种结构? Where are you going?I am going to the cinema. I am going to go cinema正确吗I am going to go to the cinema正确吗 I am going to send him some books,to.错在哪 in front of the school building __ a playground. In the front of the school s( ) a high building they are in front of the building.（对划线部分提问） 【In front of the building stand two tall trees】我知道这句话是完全倒装,但是为什么是stand而不是stands? ()are in front of the teaching building Rape RAPE是啥意思 rape什么意思? rape是什么意思? 温度计读数有一支温度计,其刻度值是均匀的但读数不准,在冰水混合物中的读数是4℃,而在一标准大气压沸水里,读数为96℃,用这支温度计测温度为（ ）℃的液体时,其测量值才接近于真实值. 一个烧杯中上层是冰水混合物,下层是水,两只相同的温度计一个插在上层（冰水混合物）,一个插在下层（水）；问：为什么在一段时间内（冰没有完全融化）,上层温度计的读数为0度.而下层 let’s go to the cinema.同义句转换成问句 He wants ____the box to his room.Can you help him?A.taking B.take C.takes D.to take快…… 一段弹簧下端系一重物弹簧拉长4cm在用力向下拉1cm,求此时上升时的加速度 1.assault和attack者两个词在用法上有什么区别 strike和attack区别 offensive attack 做名词时有什么区别 a longer life span means that the nation ' s elderly population is bound to expand significantly over the next 50 years.这句话中的over是什么意思?词性是? 作文 今后的日子急呀,趋向于作文的检讨