各位童鞋帮忙做一下，不会做......._百度知道
各位童鞋帮忙做一下，不会做.......
第1课时 机械运动 1. 动与静 ⑴在物理学里，把一个物体相对于另一个物体
的改变称为机械运动。
⑵研究机械运动时，事先选定作为参照标准的物体，叫做
⑶参照物的选择是任意的。如果同一物体，相对于参照物的位置在改变，则称这个物体是
的，相对于参照物的位置没有发生改变，则称这个物体是
的，这就是运动和静止的
。 2. 长度与时间的测量 ⑴测量长度的工具是
，国际单位制中，长度的单位是
。 ⑵测量时间的工具是
，国际单位制中，时间的单位是
。 ⑶刻度尺的正确使用：① 刻度尺要放正，有刻度的一边要紧靠被测物体。② 读数时视线要与尺面垂直。③ 要估读到
的下一位数，并记下单位。④ 多次测量取平均值。 ⑷误差不是错误。误差总是存在的，只能尽可能减小，不可能消除。通常我们采用
的方法减小误差。 ⑸要锻炼自己的估测能力。对身边的一些常见的长度和时间要熟悉：如：一拃长度约
cm，课桌高度约
cm，教室高约
m等。对于和人体有关的时间要熟悉，如：成年人在平静状态下每分钟心跳约为70—80次，眨一下眼大约为0.4 s等。 ⑹要掌握一些特殊的测量方法，如：化曲为直、累积法、辅助工具法（如测量乒乓球的直径）等。 3. 快与慢 ⑴生活中人们比较物体运动快慢的方法有两种：
。 ⑵速度是反映
的物理量。在物理学中，把物体在
称为速度。 ⑶速度、路程、时间之间的关系为：
。（数学表达式） ⑷速度单位换算：
可测出物体的速度。 ⑹匀速直线运动：
运动称为匀速直线运动。 ⑺变速直线运动：
运动称为变速直线运动。
提问者采纳
1 位移 参考系 运动 静止 相对性2 尺子（啥？） 米 秒表 秒3 分度值4 多次测量取平均值5 20 80 43 相同时间内比较两物体通过的路程 比较两物体通过相同路程所用时间
物体运动快慢 单位时间内通过的路程 s=vt 1m/s=3.6km/h
尺子和秒表（啥？）
物体在一条直线上运动，且在任意相等的时间间隔内的位移相等的
物体在一条直线上运动，且在相等的时间里位移不等的你们这是什么题啊。。。还考概念
提问者评价
原来是这样，感谢！
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其他2条回答
1(1)位置 (2)参照物 (3)静止 2（1）刻度尺 米⑵停表 秒⑶分度值（4）多次测量取平均值（5）20 80 43（1）单位时间比路程 单位路程比时间⑵运动快慢 单位时间内物体运动的路程(3) v=s/t（4）1m/s=3.6km/h(5)刻度尺 停表(6)物体以恒定不变速度沿直线⑺物体以变化速度沿直线
参考系，运动， 静止2米尺，米，秒表，s，小数点 ，？
10，100，33瞬时速度，平均速度，快慢，？v=s/t,米尺，秒表，速度不变的直线，速度改变的直线·~~~~~看着写吧，不一定全对
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出门在外也不愁英语试题1高手门帮忙做一下下面的题 急用Ⅰ.Fill in the blanks with the most appropriate answers according to the literary texts.1.In 55 B.C.,Britain was invaded by ,the Roman conqueror.But it was not completely subjugated to the Roma_百度作业帮
英语试题1高手门帮忙做一下下面的题 急用Ⅰ.Fill in the blanks with the most appropriate answers according to the literary texts.1.In 55 B.C.,Britain was invaded by ,the Roman conqueror.But it was not completely subjugated to the Roma
英语试题1高手门帮忙做一下下面的题 急用Ⅰ.Fill in the blanks with the most appropriate answers according to the literary texts.1.In 55 B.C.,Britain was invaded by ,the Roman conqueror.But it was not completely subjugated to the Roman Empire until .And in ,all the Roman troops went back to the continent and never returned.2.For nearly 400 years before the coming of the English,Britain had been a province .After the Romans left,Britain was invaded by swarms of pirates.They were three tribes from Northern Europe:the ,and .3.By the time when England entered the feudal society,the chief feature of the society was distinct division into classes,mainly two classes:and .4.The first complete English Bible was translated by and The Authorized Version was made in ender the auspices of .5.is the symbol of Shakespeare’s ideal kingship.6.The key-note of Hamlet’s character is .7.was the founder of the Metaphysical school of poetry.8.is called the Father of the English Novel.9.The greatest historical work in English literature,The Decline and Fall of the Roman Empire is the masterpiece of .10.Friday is a character in the novel .11.A classic of English biography Life of Johnson is produced by .12.Byron is chiefly known for his two poems,one is Childe Harold’s Pilgrimage,the other is .13.is Shelley’s first long poem of importance.It was written in the form of a fairy tale dream.14.Ode to a Nightingale expresses the contrast between and .15.was regarded as the best essayist during the Romantic Age.16.is the author of the writing Ode to a Nightingale .17.In 1836 arose working-class movement known as .18.Charles Dickens’s first published sketch appeared in the in 1833.They were collected in 1836 as .19.Austen’s novel is the most widely read among all of her works.20.In the Idylls of the King Tennyson painted the character of the first English national hero ,and gave new meaning to the legends.Ⅱ.Choose the best answer from the four choices.1.One of the most striking manifestations of the supremacy of the Norman conquerors was to be seen in the .A.language B.religion C.politics D.social life2.By the end of the 14th century,when Normans and English intermingled,because the dominant speech in the country.A.French B.English C.Italian D.German3.Chaucer composes a long narrative poem named based on one of Boccaccio’s poems.A.The legend of Good Women B.Troilus and CriseydeC.Sir Gawain and the Green Knight D.Beowulf不是剩几道 还有好几问呢 这是一套题 一共六问 分真不多 可是我可以请你吃饭啊
Ⅰ.Fill in the blanks with the most appropriate answers according to the literary texts. 1.In 55 B.C., Britain was invaded by [Julius Caesar],the Roman conqueror. But it was not completely subjugated to the Roman Empire until[78 A. D] . And in [410 A. D.] , all the Roman troops went back to the continent and never returned. 2. For nearly 400 years before the coming of the English, Britain had been a province . After the Romans left, Britain was invaded by swarms of pirates. They were three tribes from Northern Europe: [the Angles, Saxons and Jutes.] 3. By the time when England entered the feudal society, the chief feature of the society was distinct division into classes, mainly two classes: [landlords and peasants.]4. The first complete English Bible was translated by [ John Wycliffe (1324 -84),] and The Authorized Version was made in ender the auspices of . 5. [Henry V]is the symbol of Shakespeare’s ideal kingship. 6. The key-note of Hamlet’s character is [melancholy] . 7. [john Donne]was the founder of the Metaphysical school of poetry. 8. [Fielding]is called the Father of the English Novel. 9. The greatest historical work in English literature, The Decline and Fall of the Roman Empire is the masterpiece of [Gibbon, Edward, ]. 10. Friday is a character in the novel[Robinson Crusoe] . 11. A classic of English biography Life of Johnson is produced by . 12. Byron is chiefly known for his two poems, one is Childe Harold’s Pilgrimage, the other is . 13. ["Queen Mab"] is Shelley’s first long poem of importance. It was written in the form of a fairy tale dream. 14. Ode to a Nightingale expresses the contrast between[the happy world of natural loveliness and human world of agony.]. 15. [ Walter Scott ]was regarded as the best essayist during the Romantic Age. 16. [John Keats] is the author of the writing Ode to a Nightingale . 17. In 1836 arose working-class movement known as . 18. Charles Dickens’s first published sketch appeared in the in 1833. They were collected in 1836 as . 19. Austen’s novel is the most widely read among all of her works. 20. In the Idylls of the King Tennyson painted the character of the first English national hero , and gave new meaning to the legends. Ⅱ. Choose the best answer from the four choices. 1. One of the most striking manifestations of the supremacy of the Norman conquerors was to be seen in the . [A]A. language B. religion C. politics D. social life 2. By the end of the 14th century, when Normans and English intermingled, because the dominant speech in the country. [B]A. French B. English C. Italian D. German 3. Chaucer composes a long narrative poem named based on one of Boccaccio’s poems. A. The legend of Good Women B. Troilus and Criseyde C. Sir Gawain and the Green Knight D. Beowulf还剩几道题,不够时间,回来再说吧.[ ] 里的是答案请帮忙翻译做一下，谢谢！_百度知道
请帮忙翻译做一下，谢谢！
A man is going to the house of a friend. It is quite far away and so he takes some sandwiches along for his lunch. An he goes along, he says to himself,” My friend is sure to give me a very nice meal. He is going to give good wine (酒) to drink. So what’s the use of these dry sandwiches?” As he says this, he throws them onto the ground.He goes on and comes to a river. The river has become very big because of the rain in the past few days. He cannot cross the river. He hopes there is a boat to take him over. So he waits and waits. He waits for a long time. Then the sun begins to set. The man says to himself, “I cannot go to my friends’ house today. I must go home.”Then he starts for（出发）home. Soon he feels very hungry. He wants very much to have something to eat. But he doesn’t have anything. Suddenly he sees some dry, dirty, hard sandwiches on the road. He is very happy. He picks them and eats them all.Do not throw good things away. You may need them later on.根据短文内容，选择正确答案。1. It will take the man _____ to walk to his friend’s house. A. a few days
B. a few hours
C. a whole night
D. one hour or two2. He throws the sandwiches to the ground because _____.
A. he doesn’t like them. B. the sandwiches are dirty. C. he thinks his friend will not like them. D. he is sure to have a nice meal at his friend’s house.3. In “the sun begins to set”, “set” here means _____ in Chinese. A.落下
E.照耀4. The story tells us that we _____. A. mustn’t walk a long way to visit a friend. B. mustn’t throw dry sandwiches away. C. must throw things away when we don’t need them. D. must always keep good things.5. He has to go back home because _____. A. it is late
B. he hasn’t got sandwiches. C. it rains hard
D. he is hungry.
提问者采纳
一个男人要去他的朋友家，这相当的远，所以他带了一些三明治作为午餐，他一个人走，他对他自己说：“我的朋友要给我一顿大餐，他也要给我一些好酒喝，所以，这些干三明治用来干嘛呢？”正如他所说的，他把它们扔到了地上。
他一直走，走到了一条河边，这条河变的很大由于前几天的雨，他不能穿过这条河，他希望有一艘船能把他带过去，所以他等了又等，他等了很长一段时间，一直到太阳落山，这个男人对自己说，“今天，我不能去我朋友家了，我必须回家。
之后，他开始回家，不久，他感觉到很饿，他想要很多东西去吃，但是他没有任何东西。突然，他看见了一些很干，很脏，很硬的三明治在路上。他很高兴，他捡起了他们，并且吃光了全部。
不要把好东西扔掉，你可能之后就需要它们。根据短文内容，选择正确答案。1.它要花费这个男人_____去走到他朋友家。（B）A几天
一或两个小时2.他在路上扔掉了三明治因为_____ （D）A 他不喜欢他们
B 这些三明治很脏
C 他认为他的朋友不喜欢它们
D 他很确信他的朋友在家里准备了美味的大餐3. 在“In the sun begins to set”这句话中“set”的中文意思是什么？ （A）A.落下
E.照耀4. 这个故事主要告诉我们 _____.（D）A. 不准走很长的路去拜访朋友B. 不准扔掉干三明治C. 一定要扔掉那些东西当我们不需要的时候D. 一定要总是保留好东西5. 他不得不回家因为 _____.（D）A. 太晚了
B. 他没有得到三明治C. 这雨下的很大 D. 他很饿由于都是自己翻译的，可能会有一些差错！！希望采纳
对不起啊，5题选A
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一个人要到一个朋友家。因为很远，所以他带了一些三明治，拿着他的午餐。他走了，他对自己说，“我的朋友肯定会给我一个很好的餐。他是要给酒好喝。那么，这些干三明治有什么用？“他说，把三明治扔到地上。
他接着来到一条河。河水已变得非常大，因为在过去几天的雨。他不能过河。他希望有一个船带他过来。所以他等了又等。他等了很长时间。然后，太阳出来了。他对自己说，“我不能去我的朋友家今天，我必须回家了。”
然后他开始回家。很快，他感到很饿。他很想吃点东西。但他什么都没有。突然他看到了一些干的，肮脏的，道路上的硬三明治。他很高兴。他把它们都吃了。
不要把好东西扔掉。你可能需要它们。ADCDD
一个男人去朋友家里。它是非常远,所以他需要一些三明治一起吃午饭。一个他一路走来,他对自己说,“我的朋友一定会给我一个非常好的餐。他要给好酒(酒)喝。那么怎样使用这些干燥的三明治吗?“他说他扔到了地上。
他将来到一条河。河水已变得非常大,因为下雨在过去的几天里。他不能过河。他希望有一个船带他。所以他等待和等待。他等了很长时间。然后太阳开始设置。男人对自己说,“我不能去我朋友的房子今天。我必须回家了。”
　然后他开始为(出发)回家。他觉得很饿,很快他要很有东西吃。但是他没有任何东西。突然他看到一些干燥的,肮脏的,硬三明治在路上。他很高兴。他挑选他们,吃他们所有。
　　不要把好东西扔掉。你可能需要他们稍后。
　1。它会把人_____走到他朋友的房子。
　　a .几天b .几小时c .整晚...
一个人要到一个朋友家。这是很远，所以他带了一些三明治，沿着他的午餐。他走了，他对自己说，“我的朋友肯定会给我一个很好的餐。他要把美酒喝（酒）。那么，这些干三明治用？“他说，他扔到地上。
他接着来到一条河。河水已变得非常大，因为在过去几天的雨。他不能过河。他希望有一个船带他过来。所以他等了又等。他等了很长时间。然后，太阳开始设置。他对自己说，“我不能去我的朋友家今天。我必须回家了。”
然后他开始（出发）家。很快，他感到很饿。他很想吃点东西。但他什么都没有。突然他看到了一些干的，肮脏的，道路上的硬三明治。他很高兴。他把它们都吃。
不要把好东西扔掉。你可能需要它们。
根据短文内容，选择正确答案。
1。它会把人_____走到他的朋友家。
A. B. C.几天几小时一晚上的一...
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出门在外也不愁帮忙做一下_百度知道
帮忙做一下
One day, Mr Smith said to himself,”I haven’t seen my brother for a long time,and he is living in a new house now.I’ m going to drive there and see him this afternoon.”He took his brother’saddress ,got into his car and started out .He drove for a long time,but he didn’t find the house .So he stopped and asked somebody to help him.“Go straight along this road for two miles,”the man said,then turn left and take the second road on the right ,”Mr Smith went straight along the road and turned left after two miles,but then be got lost again ,He drove for another mile,and at last he saw a road on his right and stopped .A woman was coming towards him ,so he said to her ,Excuse me ,is this the second road on the right? (
) 1. Mr Smith and his brother
visited each other.
B.seldom(很少)
)2. Mr Smith went to see his brother
. A.yesterday
B.the day before yesterday
C.that afternoon
D.the next afternoon (
)3. Mr Smith didn’t find the house after a long time ,so he A.stopped to sak someone for help
B.stopped looking for
C.had no idea
D.looked worried (
)4. Had Mr Smith been to his brother’s new house? A.Only once.
B.Perhaps not. (也许不能)
C.Maybe twice.
D.Twice at least. (
)5. When Mr Smith got lost again,he met a woman and asked A.A clever question
B.a silly question
C.how to get to his brother’s house
D.how to to back
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出门在外也不愁请帮忙做一下_百度知道
请帮忙做一下
At the receiving terminal _______ to separate the 8-digit sequences into the appropriate channels.the codec is required tha frame code is needed PCM is used a demultiplexer is arranged Within the terrestrial system, the message signal is strong and ________ .the noise power is very low the niose power is also strong the noise is very weak the noise is in outer space PCM is dependent on three separate operations, ___________ .coding, decoding and choosing sampling, quantizing and performing sampling, coding and decoding sampling, quantizing and coding For example, the signal ________ from a sattelite, located in far outer space, is very weak.receiving received be received in PCM system 词组“被传信号的波形”的英文是：the shape to transmit signal shape siganl to transmit transmit signal shape the shape of transmitted signal “格式”的英文是：form format formula frame “编译码器”的英文是：codec coder decoder unique “参数”的英文是：system parameter environment attenuation “同步”的英文是：parameter reexamination environment synchronization “信噪比”的英文是：known as the ratio noise and signal signal over noise signal-to-noise ratio
提问者采纳
zzw881112 ，你好：
答案依次如下：a demultiplexer is arranged
the noise is very weak
sampling, quantizing and coding
in PCM system
the shape of transmitted signal
synchronization
signal-to-noise ratio
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synchronization
signal-to-noise ratio
At the receiving terminal _______ to separate the 8-digit sequences into the appropriate channels.
a demultiplexer is arranged
Within the terrestrial system, the message signal is strong and ________ .
the niose power is also strong
PCM is dependent on three separate operations, ___________ .
sampling, quantizing and coding
For example, the signal ________ from a sattelite, located in far outer space, is very weak.
词组“被传信号的波形”的英文是：
the shape of transmitted signal
“格式”的英文是：
“编译码器”的英文是：
“参数”的英文是：
“同步”的英文是：
synchronization
“信噪比”的...
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