货币政策是国家宏观调控经济的一项重要政策。货币政策工具主要包括（）。A．法定准备金率、

average函数,怎么读请用汉语拼音拼一下好吗?

英语翻译My Pledge My Oath I What`s your story?You can`t speak!You can`t understand!You feel bad!You feel hopeless!That`s crazy!Cherr up!It`s not the fnd of the world.Speaking English is a piece of cake.Don`t look back.Enjoy losing face.Just forget about your face.The more mistakes you make.The more progress you make.Don`t gave up.Just try your best.Relax!Don`t painc!Take it easy!Be patiet and enjoy yourself.Learning English should be fun.Speaking good English is no big deal.It`s worth your time and effort.It`s an easy job.Do something about it.You have no choice.No more excuses!Get moving.Let`s get started!Let`s talk in English!you`d better do it now.I have every confidence in you.I want to be proud of you.It`s my pleasure to help you anytime.You can count on me!Don`t worry about it.I`mserious.Ill try my best.We will make it together. 英语

     Persevance the quality of never giving up when facing great challenges lies behind every great achievement in anyone’s life. With perseverance a lame boy can learn to swim; with persistence a conquered country will win freedom.     Only with strong determination can people fight their way to final victories. Many a famous man has the same experience .They have obtained their status because they have had the will to overcome numerous difficulties. Outstanding athletes go all out to train themselves. Their  w illpower  is beyond imagination. We all have read of great musicians writers and inventors  have created or discovered breakthroughs recorded in history. Always they have said that they owe all their success to perseverance. As to students quite a big number of them  have been successful through perseverance. However acertain group of them just stop half way and their previous efforts turn out to be fruitless.    The  same  is true   of  many rich businessmen. What we usually see are their achievements but once we go behind the seenes we will find that they have put in a lot of continual steady  efforts Of all countless  exarmples the story of Colonel Saunders is perhaps one of the most outstanding. The 65-year-old man from Kentucky   had a dream，to start a chain of fried chicken  restaurants all over the world. To rcalize his dream ，he knew that he needed a restaurant   to go into partnership with him to open the first restaurant and to fry chicken according to the  secret recipe (配方）he had. Colonel Saunders had knocked on 1008 doors before  he finally  found a proper person to co-operate with. It is doubtful whether many of us would have had the perseverance to knock even a hundred doors.      We can conclude that success comes to anyone who keeps working perseveringly  while of perseverance  can only result in frustration and failure. 28. Which of the following is true of perseverance? A. Lame boys need it more.  B It means never giving up. C. Most students lack it.   D. It's more important than effort 29. What can be inferred from the third paragraph? A. Saunders succeeded all by himself. B. Saunders wouldn’t knock on 1008 doors. C. Saunders owed his success to his secret recipe. D. Saunders had failed many times before he succeeded. 30. Which is the key to success according to the passage? A. Great imagination.         B. Numerous difficulties. C. Continual steady efforts.   D. Previous hard work. 31.How is the passage mainly developed? A. By inferring and comparing.           B. By analyzing causes and effects. C.By explanations and listing examples. D. By following the natural time order. 英语

某次列车从碾子山到齐齐哈尔的铁路沿线上共停5站(包括碾子山和齐齐哈尔这两个站）,请问铁路局为这5站点共需要准备多少种不同的车票?

博弈论案例分析求解!着急!A, B 两家公司在研发同一种技术,率先研发成功的公司将赢得估值两千万的专利权.研发这项技术需要依次完成若干“步骤”,两家公司轮流行动（A 行动在先）,直到其中一家公司赢得专利权.所有已经完成的研发成果都是公开的,即,如果A 完成了一个步骤,那么B 可以学习到A 的方法,它自己不需要再重复这一步.在每一轮行动中,一家公司可以选择完成0 个、1 个或2 个步骤.完成0个步骤无需投资,完成1 个步骤的投入为6 百万元,完成2 个步骤的成本为一千五百万元.博弈开始时双方距离完成研发还有3 个步骤.1. A, B 两家公司接下来将如何行动?最后谁能赢得专利?请详细解释每个步骤.2. 若这项专利权的估值是一亿元,结果会改变吗?