设x1,x2,...xn为来处总体X的样本,总体X服从(0,Ө)上的均匀分布,试求Ө的矩估计

云水萦回溪上路.叠叠青山,环绕溪东注.月白沙汀翘宿鹭.更无一点尘来处.
溪叟相看私自语.底事区区,苦要为官去.尊酒不空田百亩.归来分得闲中趣.

我也就如此直白了：
云徘徊,水绕流
缠着溪边曲曲悠悠的路
重重叠叠的青山
傍溪水绕行,向东流

清和的月色洒落沙洲
照见翘首而宿的鹭鸟
无风也无尘

溪边老叟见了自言自语
小而可的事,何苦做什么官去

有酒杯不空
有田百来亩
何不归来享份闲趣呢

我们虽然没有百来亩的田,留份闲心,醉份闲情,让心有个栖息的片刻,总还可以；
东坡一辈子也没归耕,一辈子颠簸,但他总能忙里偷闲,留着了一份闲心,因此也痛并快乐着

解题思路：安全用电的原则中，我们要切记：不接触低压带电体，不靠近高压带电体；根据高压触电的类型电弧触电和跨步电压触电．

如高压线落到地面上，人靠近时，会在人的两脚间形成跨步电压，就可能造成跨步电压触电，故要派人看守现场，迅速找电工师傅来处理．故选项A的说法正确．
故选A．

点评：
本题考点： 触电危害及常见的触电类型与预防．

考点点评： 本题考查了高压触电的特点，一定要注意：不接触低压带电体，不靠近高压带电体．

（1）在末句,虚写置身峰头,收束全篇.既表现了对故乡的思念,更表达了对“京华亲故”一为援手的急切期待.
（2）表达的是在草木变衰的秋天,思念家国愁肠如割的痛楚.诗人在运用比喻手法的基 础上展开想象,直接抒发了奔迸而出的强烈感情.

Twilight
Night in a young
Listening a song
Qinglie lingering
Such as the mountain breeze blowing across the lily
Re eager to sound Perishable Shique
Not a trace nor to place
Air leaving the moonlight skin soak into the depths
After two years in a dusk
What is similar with the night
Seoul so that the melody actually come lightly
Hill should be encroaching upon my heart Ming Gu
Review of the trails ah
Gray sideways Cuiwei
The ups and downs this half-ah
In the darkness into the sweet tears actually

韩愈的文章和杜甫的诗,没有一个字是没有来处的,文人喜欢相互采取。韩文杜诗号称不抄袭前人，但却没有一个字没有来处。所以世间所有的好句，古人都已经说过了，有才能的人重复一下，只不过和孙吴的暗合而已。大抵写文章和做诗，自创文句最难，用古人的言语，又很难做到不露筋骨，最后一句不是很清楚。...

知识指的是：我所写的诗歌和文章都是为思念故乡
刺：思乡之情像刺扎在心上,让我一经响起便心痛难耐
情感：希望像鹰、云一样可以自由飘荡,飘到我的故乡,表达了诗人浓烈的思乡之情.
诗歌名句：露从今夜白,月是故乡明——杜甫
春风又绿江南岸,明月何时照我还——王安石

按古代印度《倡只律》解释：一刹那即为一念,二十念为一瞬.二十瞬为一弹指,二十弹指为一罗预.二十罗预为一须叟,一日一昼为三十须叟.照此计算：一须叟为48分钟,一罗预为114秒.一弹指为7.2秒,一瞬为0.36秒,一刹那为0.018秒.

A、乒乓球的大小和旋转对乒乓球的运动影响很大，研究乒乓球的运动不能作为质点来处理．故A错误．
B、船的大小和形状相对于茫茫大海很小，要确定它在大海的位置时，可以把它当作质点来处理．故B正确．
C、研究杂技演员在走钢丝的表演时，杂技演员不能当作质点来处理．因为杂技演员的动作、造型等对观赏、评判等影响很大．故C错误．
D、地球的大小和形状对研究地球的自转运动的影响不能忽略，不能把地球可以当作质点来处理．故D错误．
故选B

In fact,love is a very lonely thing,as caught in the fingers of cigarettes.Apart from burning a short moment,it's to,is unknown to the corner and wait for a hand-kan-kan it Nianqi while its place,it is the Kongmang destroyed,as the demise of life,Passing away of that moment,is still lonely.
Set aside if the idea aside,only on nature,love and cigarettes,is basically the same.For example,both need a polishes the spark of love sparks produced the differences in PHASE (the same) between,with the scientific point of view,that is,two inter -
And the role of the opposite magnetic field,a moment occurred in the electromagnetic response,thus stimulating hormone secretion,leading to two people or a person of love.Huahuo and cigarettes,matches or lighters from the role,the same scientific areas,but replaced by a chemical reaction.
Similarly,love and cigarettes also have a combustion process,the length of time depends on his or her good fortune with the idea.Smoking is the best way to slow absorption slow spit,carefully taste.The best way to deal with love,but also顺其自然,not force.We are well aware,anything,there are bound to start over,cigarette case,love is this,love,disillusionment like soot,after all fell to dust,without a trace.At that time,they maintain,is nothing but habits and emotions,and even obligations and responsibilities,but has nothing to do with the love already.
The arrival of love,and Maiyan,are unpredictable.When you banished from the small street stalls,or from the magnificent shopping malls,buy a pack of cigarettes,you do not know which one is your love,or whether there are any of your love.As you walk in the street,or in a warm afternoon Xiaxiang,you do not know,would you lit a cigarette.The arrival of love there is no sign,as a cigarette lit,nor has he any indication.In the absence of premeditated circumstances,you experience the love,or,you lit a cigarette.
Love and cigarettes,the same short-lived.They only difference is that you can access a one to smoking,it will never be a time to enjoy their love.Even if you have a practice of fine immortal,to live the Millennium Wanshi,really love you,and only once,the only time you in this the only time in the combustion,and then disappearing.Of course,love will not leave the world,but it will leave you back to the eternal loneliness of waiting,watching another person to another burner.
In fact,the love of a person,is really a very lonely thing,no one would like the endless lonely,so the bottom of my heart,we still prefer the outcome of this.Although,come and go hurry love,the people have endless miss,but this short,Quegeng with human nature and needs.We can not imagine a suction Buwan never smoke,as a success we can not always warm love,not only inconceivable that,contrary to common sense,the same,also makes people unbearable.
So,let love or loneliness on it,quietly in the corner,quietly waiting for a polish of the sparks,the burning of the moment,like your fingers caught in the Flanagan cigarettes.
有些词实在不会,sorry!

　　电影 弱点The Blind Side里面的：
　　Michel wrote about the The Charge of the Brigade《轻骑兵的冲锋》：
　　Courage is a hard thing to figure. You can have courage based on a dumb idea or mistake. But you’re not supposed to question adults or your coach or your teacher, because they make the rules. Maybe they know best. But maybe they don’t. It all depends on who you are, where you come from. Didn’t at least one of the six hundred guys thinks about giving up and joining with the other side? I mean, valley of death that’s pretty salty stuff(悲剧). That’s why courage it’s tricky. Should you always do what others tell you to do? Sometimes you might not even know why you’re doing something. I mean any fool can have courage. But honor, that’s the real reason you either do something or you don’t. (但荣誉,才是你有所为有所不为的真正动因) It’s who you are and maybe who you want to be. If you die trying for something important, then you have both honor and courage. And that’s pretty good. I think that’s what the writer was saying, that you should hope for courage and try for honor. And maybe even pray that the people telling you what to do have some, too.

这个字已经被废除了.
这个字念geng 第三声
梗（Terrier)是用于狩猎穴熊,野兔,水獭等小动物的一种小猎犬.他们多数都具有聪明活泼,行动敏捷,勇敢顽强,勤劳忠实的性格.除少数几种更外,绝大部分产于英国.更的名称起源于拉丁文的“Terra”,意思是“掘土”,该类犬善于挖掘地穴,猎取栖息在土中或穴中的獾,狐狸,野兔,水獭等小动物.他们较小的体形,正配合了这种需要.