一对直齿圆柱齿轮的中心距与分度圆半径及节圆半径的关系

求教—— My efforts resulted in nothing急! He walked too slowlu to catch up with his friends .(改为同义句) I felt my heart was hurting all of a sudden、请帮我翻译成汉语 There is mo bridge here,so you have to go to the other side of the ricer by f_____横线上该填什么单词?急! I am a little anxious to see you we can see red leaves in autumn.根据划线部分提问(划线部分：see red leaves) You can see no _____ (many) dinosaurs today.如何填?为什么? on 和on top of区别 on top of 和 on the top of在表示位置时的区别 He jumped ____the water and _____Tom .A.onto;to B.into;to C.over;to D.intu;for 牧童作文 高中英语如何突破140语法应该没有问题,就是词汇量少了,单词是它看我熟我看它也熟,就是记不住~ Is the famous Chinese exercise called Tai Chi Chuan healthy Yes ,of course I_ A.does you good B.makeIs the famous Chinese exercise called Tai Chi Chuan healthy Yes ,of course I_A.does you good B.makes you happy C.helps you strong D.goes well with you Mary does ( )in Chinese and history.A.very good B.very well C.good enough D.bad okey什么意思 高中英语如何上140?听力不好.完形填空和阅读理解、阅读表达、短文改错、作文不好.如何下手攻破? 英语作文“My Saturday” We cut some toast是什么结构 如果要你把一些单词连词成句,是不是要把应该是开头单词的 第一个 字母大写比如是:a,is,green,this,orange 它正确的就是this is a green orange那么this的T是不是要大写还有,就是让你补充短文中的空缺 连词成句（要求：答题时各题写上相应的题号,各句子首字母大写） 1、whenever ,a ,large ,possible ,use ,连词成句（要求：答题时各题写上相应的题号,各句子首字母大写）1、whenever ,a ,large ,possible , 连词成句（要求：答题时各题写上相应的题号,各句子首字母大写） 1、difficulties ,added ,bad ,to ,the ,连词成句（要求：答题时各题写上相应的题号,各句子首字母大写）1、difficulties ,added ,bad ,to , 牧童改作文怎么写 FOR THAT MATTER Taste is such a subjective matter that we do not usually conduct preference tests for food. 为什么这里疑问词是主语what's the matter?主语为什么不是THE MATTER呢另外Where is he?为什么这里HE是主语 而上面不是和他差不多吗 来源 网络回答上 用疑问词+主语+动词相当于一个名词造三个句子翻译谢谢急~ I gei into my house _ a ladder./_ _ a ladder我知道，那后面俩空呢 谁帮我连词成句注意大写last,night,I,show,a,sawcan,what,see,youmy,visited,I,uncle 《龙珠GT》最后的结局是什么意思?最后孙悟空和神龙合体了么?最後那么温暖的画面是什么意思? 请大家帮忙想个英文名,用中文名的谐音取英文名,我叫熊欢,女. 龙珠gt结局到底是什么意思 At a village fair,I decided to visit a fortune-teller called Madam Bellinsky请问其中:called在从句作什么成份,