设计两台电机的延时电路要求按启动M1启延时3s后M2启动要求2按停止M2先停3s后M1停要求3当M1

笼子里面的兔和鸭共176条腿,兔比鸭多2只,兔和鸭各多少只?求计算公式 养鸭和兔共120只,正好312条腿,兔和鸭各多少只 不定式修饰名词to动词都是要ing吗好像不是啊.但是为什么例句：the key to solving the problem is to.这里的是动词ing呢? 网络弊大于利的理由是什么? 看电视是弊大于利的理由无 网络阅读弊大于利的辩词与事例学校辩论赛所用, （ ） there any boxes of milk in the fridge?A.Is B.Are Is there any milk in the bottle?为什么不用are呢?还有 There is some coffee on the table,too.明明是复数为何不用are? just passing啥意思 just passing mother is talking to her grandmother the TV show. 空格中填以a开头的字母 His mother is fine.对fine提问How is his mother?对么? This is__Smith.that is his mother 括号部分提问 His mother is (very well).This pair of pants is (fifty yuan).The pants are (sixty yuan).Amy has (same) tous in her room.She drinks (a glass of) juice every day.There are (three boxes of craons) on the desk. 请大家提供各种职业的英文名!越多越好啦!例如teacher,student,engineer,doctor,nurse,astronaut等等.要中英文对照的! 各类学科和专家的英文名如心理学是psychology,心理学家是psychologist 你最喜欢什么动物?你最喜欢什么学科?你的英文名是? 帮查07年版的《现代汉语词典》中的一个字553页右边第一个字 现代汉语词典上,最后一个字是什么? 字典里的一个字"榊"这个字在字典里找不到.我想知道这个字的意义是什么.这个字翻译出来是什么意思.谁知道的告诉下! 转换句子,英语,五句 His mother is a _____(女警察) His mother is cooking_____a fire. is,worker,his,a,mother.连词成句 读对话 根据需要填写所缺物品的单词ZOOM:It’sanewschoolyear.Ineedtodosomeshopping.Zip:I’llhelp.wehaveenglishonMondaysandwednesdays.ZOOM:Ineedsomen_______sandp_____s.Zip:wehaveP.E.onTuesdays.ZOOM:Iwantanewpairofs______s.Zip:OnThurdays 读对话,根据对话的内容写出所缺的单词A：Hello,Miss Cook.B:Hello,Mr wang.A:Are_________your photos?B:Yes,they are________.A:_________are you in this picture?B:I'm in Hawaii in this picture.A:You have been to Hawaii!Can you___________me is in china he mother his wich 连词成句 She likes to wear a s____ on her head to keep warm.空中应该填什么? At first sight the bag seems made of real leather but actually it is just an imitation翻译汉语 she is always laughing her head off in pictures... Americans consume nearly 40% of all Chinese exports.怎么翻译? 英语翻译despite all the evidence of the extraordinary improvements in public health during the past century,surveys show that we experience more symptoms.