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1升水等于多少kg 1升水是多少kg

2023-05-19 23:57:12
共1条回复
ardim

1、1升水等于1kg。一般情况下水的密度是1000千克/立方米,一升水是1.0kg/L*1L=1.0kg(即2斤)

2、物质的密度和温度以及压力有关, 不能简单说一升水是多少公斤。必须指明温度和压力条件。当然,一般不严格要求时, 水的密度为1.00kg/L。

3、如果是油、酒等,比水的密度小,那么1升油<2斤;

4、如果是盐水、牛奶等,比水的密度大,就相反。

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2023-01-12 23:55:143

大学英语四级写作要求与技巧

大学英语四级写作要求与技巧   四级作文的字数要求一般是不少于120字。要在30分钟的时间内,达到这些要求,没有一套行之有效的方法显然是不行的。那么下面就和我一起来看看有什么好方法吧。    一、审题   1.审体裁(议论文,说明文,描述文)   审题就是要审作文的题材和体裁。因为什么样的体裁就会用什么样的题材去写。那么体裁包括那些呢?它包括议论文,说明文和描述文。从近些年看,四级作文不是单一的体裁,而是几种体裁的糅合体。例如:   Directions: For this part, your are allowed 30 minutes to write a composition on the topic   Trying to Be A Good University Student。   You should write at least 100 words and you should base your composition on the outline(given in Chinese)below:   做合格大学生的必要性   做合格大学生的必备条件(可以从德智体方面谈)   很多人说这种类型的作文是议论文。这是片面的,因为,   第一段要求写“„必要性”,则是议论文;   第二段要求写“„必备条件”,则要求写说明文;   第三段要求写“„这样做”,则要求写描述文。所以在大多数情形下,四级作文是三种体裁的糅合体。   2.确定相应的写作方法   我们审题的目的就是根据不同体裁确定不同的写作方法。通过审题,我们可以看出四级作文大都是三段式。如上例第一段为议论体,第二段为说明体,第三段为描述体。而各种文体又有不同的写作方式:议论文:要有论点和论据,而且往往从正反两方面来论述。例如上面第一段的思路是:做合格大学生,会怎么样(这是从正面论述);不能做合格的大学生,又会怎么样(从反面论述);所以我们要做合格的大学生(结论)。说明文:可以从几方面来说明一个问题,可以从德智体三方面来说明合格大学生的必要性。描述文:以“人”为中心描述一个“做”的过程。与上两段相比,本段的主语多为人称代词,他要与第二段相呼应进行描述。   二、确定主题句   审完题后,接下来就是如何写的问题。第一步就是确定主题句,主题句既能保证你不跑题,又能帮助你制定写作思路。而写主题句最保险的"方法就是直接翻译中文提纲,如上述之段主题句为:   It is very necessary to be a good university student。(议论体的主题句) There are several respects of necessities to be a good university student。(说明体的主题句)   What I will do in the future is the following。(描述体的主题句)    三、组织段落   确定主题句后,接下来的工作就是展开论述。许多考生真正犯难的也是这一步。最基本的解决办法是扩大词汇量,丰富自己的语法存储。在写作时,语法和词汇都是最基本的。然而,组织段落的能力也是尤为重要的(接下来的连贯与衔接部分,我们更为详细的为大家讲解)。行文时,不只是提供一些information,还要学会运用一些examples, personal experiences, comparisons, descriptions等等,只有这样,才不会觉得无话可“写”。    四、连贯与衔接   1.列举法   列举的模式通常是   主题句   ----example 1   ----example 2   ----example 3   列举时常用for example, for instance, such as, like,thus, take„as an example, to illustrate 等词语。   Nonverbal communication, or "body language," is communication by facial expressions, head or eye movements, hand signals, and body postures. It can be just as important to understanding as words are. Misunderstandings are often amusing but sometimes serious ones can arise between people from different culture if they misinterpret nonverbal signals. Take for example, the differences in meaning of gesture are very common in the United States: a circle made with the thumb and index finger. To an American, it means that everything is Ok. To a Japanese, it means that you are talking about money. In France, it means that something is worthless, and in Greece, it is an obscene gesture. Therefore, an American could unknowingly offend a Greek by using that particular hand signal。   2.分类法   一般是在主题句之后,依次罗列段落指示词所表达的几个部分或几个方面。然后,选用丰富的事例对所罗列的各个部分或各个方面进行具体地说明或解释。   There are three basic kinds of materials that can be found in any good library。   First, there are books on all subjects, both in English and in many other languages. These books are organized according to subject, title, and author in a central file canned the card catalog. Books can generally be checked out of the library and taken home for a period of two to four weeks。   Second, there are reference works, which include encyclopedias, dictionaries, bibliography, atlases, etc., and which generally must be used in the library itself。   Third, there are periodicals- magazines, newspapers, pamphlets-which are filed   alphabetically in racks, or which have been filmed to conserve space. Like reference works, periodicals cannot usually be removed from the library. 分类时常用:most of all, next,moreover, in addition,besides,furthermore,to begin with,to start with,first of all,first,second,third„   3. 因果关系   在段落一开头,就用主题句点明其因果关系,然后选用有关材料,客观的罗列某些原因或结果,以阐述中心思想。   Growing numbers of well-to-do Americans are making the decision to move abroad. They find it impossible in America to walk the streets at night without fear of being raped, mugged, or murdered, nor do they see a way to escape the poisonous air of the cities. They maintain that even American food has become increasingly dangerous to eat. Last but not least, they insist that they are sick of the pace of American life, a pace that leaves no time for relaxation or pleasure。   因果关系常用语汇:   because of, so, owing to, thanks to, thus, as a result of, hence, for this reason, consequently, is caused by, lead to, result in   4.比较法   主题句必须明确表明所要比较的对象和所要比较的范围,实际上就是罗列两个或两个以上比较对象的相同点。   Learning English is like building a house. Laying a solid foundation is the first and most important step. In other words, you should read and speak English every day. Memorizing new words and phrases is also helpful. Like building a house, learning English takes some time。   So don"t be impatient. Remember, Rome wasn"t built in a day。   常用语汇:at the same time, similar to, accordingly, both, show a degree of similarity, similarly, the same as, and„ too, in the same way, in a like manner   5.举例法   列举事实或举出实例来说明中心思想, 是简单易行、具有说服力的写作方法。   Communicating with other people by telephone is very convenient,   especially when you have something urgent. For example, if one of your family members is seriously   ill at night, and you don"t know how to deal with it and where to find a doctor, what can you do? A telephone is the answer. Dial 120 and you will get services from the hospital very soon。 ;
2023-01-12 23:45:151

赞美茶花的句子

1、娇嫩欲滴、美丽动人、美丽芬芳、香气怡人、香气扑鼻、朴素典雅2、山茶花的花瓣层层叠叠,柔软而有弹性,花瓣里缀满了许多金黄色的小颗粒,这就是孕育这新生命的种子。我最喜欢那朵粉红色的山茶花,它的色彩犹如天边的朝霞,不是很鲜艳,却能给人一种温馨的感觉。3、光秃秃的桃树上,开出了一簇簇的桃花,那桃花白中泛出了一片片淡淡的粉红,美极了,同时,它也散发出一阵阵淡淡的清香。4、流连在花的海洋里,我仿佛觉得自己就是一朵茶花,穿着玫瑰色的衣裳,站在阳光中,微风吹拂着满树的鲜花,我也在翩翩起舞,风过了,我停止了舞蹈,静静的站在那儿,小鸟从头上飞过,叽喳喳告诉我昨夜做的好梦;蝴蝶在花丛中飞过,告诉我清早飞行的快乐……5、山茶花的红,那是怎样的红啊!像五星红旗那样明艳耀眼。描写茶花的好词好句。那金黄色的,仿佛像刚刚升起的太阳那样光芒四射,带着金黄的色彩,又带着阳光。紫色的呢?那是刚刚采摘的带着露珠的紫葡萄那样晶莹透明。真是太美了。山茶花的姿态也很美,个个都把花茎竖的直直的,花朵抬的高高的,每一朵花都显得是那么神采奕奕,意气风发。6、一朵朵红通通的花朵在茂密的叶子中间冒出来,鲜艳欲滴、争奇斗艳,有的花瓣全开了只见5、6片像心形状的花瓣全部绽开,露出嫩黄色的花蕊,黄色的花蕊围着一根长长的管状花蕊。盛开的花朵像一张美丽的笑脸,又像一个人小喇叭仿佛告诉人们春天来了。有的还是花骨朵,饱胀得马上要破裂似的,像一个个椭圆型的小橄榄,它害羞的露出它的粉红色的半边脸,仿佛在探听春的秘密,真是千姿百态,美丽极了。描写茶花的好词好句。7、山茶花的花蕊是橙色的,散发着淡淡的清香。山茶花很娇嫩,但也很顽强。很长时间不浇水,它还能顽强地生长着。8、看!那绽放着笑脸的山茶花。几十片心形的花瓣叠叠层层,开得芬芳馥郁,开得欢快舒畅。她们有的缀在枝头“荡秋千”,犹如一位正在表演精彩舞蹈的少女;有的挂在枝腰,张着大嘴,正用甜美的嗓音歌唱春天的到来;有的嵌在树叉间,仿佛在积蓄力量,迎接挑战;还有的用绿叶遮住半边脸,显得很害羞,又好像在跟我捉迷藏……每朵山茶花里,小花瓣中都藏着浅黄色的花蕊,显得十分清雅。9、春天是山茶花盛开的季节,有的同一株树上有好几种颜色,远远看上去,它显得格外娇艳。我最喜欢的是那几株粉色的山茶花,它们的形态各种各样。有的含羞待放,小巧的花苞鲜嫩可爱。有的刚刚绽放,许多花都和它争奇斗艳哩!有的已经完全盛开了,它像婴儿甜美的笑脸,向游客展示着它优美的身姿。10、院子里的茶花已经开了不少了。远远看去,茂密的叶子中点缀着红色的白色的茶花,红的红得像一团团红通通的火球,白的白得像一朵朵洁白的云朵,这些茶花争先恐后的盛开着,给大院带来了无限的春意。()
2023-01-12 23:45:151

在switch(expression)语句中,expression的数据类型不能是什么类型

在switch(expression)语句中,expression的数据类型不能是:【double】解析:本题考查对swithch(expression)语句的理解。表达式expression只能返回:int、byte、short和char,题目中的double是不正确的。同时还要注意,多分支结构中,case子句的值必须是常量,而且所有case子句中的值应是不同的,default子句是任选的。
2023-01-12 23:45:171

要新年的来历(要双语对照)

汉语中国新年的来历中国新年的日期,在各朝代并不相同。夏朝定在一月初一,商朝定在十二月初一,周朝定在十一月初一,秦朝定在十月初一。到西汉太初元年(公元前104年),汉武帝接受司马迁等人的建议使用《太初历》,恢复了夏历即农历,以正月为岁首,把二十四节气订入历法。后来历朝历代虽对历法有过修改,但基本上仍然以《太初历》为蓝本,以夏历的孟春正月为岁首,正月初一为元旦、元日,即新年的第一天。1911年辛亥革命以后,清朝统治被推翻,孙中山在南京建立中华民国政府。各省都督府代表在南京召开会议,讨论历法问题。会上达成了“行夏历,所以顺农时;从西历,所以便统计”的共识,决定使用公历,把公历1月1日定做“新年”,把农历正月初一称做“春节”,但并未正式命名和推广。1949年9月27日,中国人民政治协商会议第一届全体会议通过使用“公历纪年法”,将公历1月1日定为“元旦”,把农历正月初一定名为“春节”,并规定春节放假三天,让人们热烈地庆祝农历新年。在两千多年的历史进程中,我国的新年礼俗经历了萌芽、定型、裂变、转型的发展过程。先秦时期,新年习俗处于萌芽阶段。此时的庆祝活动主要是在一年农事完毕之际,为报答神的恩赐而举行的“腊祭”。《诗经·七月》中记载了西周时期旧岁新年交替时的节庆风俗。诗中所谓“朋酒斯享,日杀羔羊,跻彼公堂,称彼觥,万寿无疆”,是说人们将美酒和羔羊奉献给诸神,以酬谢一年来神的保佑和赐福。这时的欢庆活动因各诸侯国采用的历法不一样而没有统一的日子,大致在冬天农闲之际,它是后来新年习俗的雏形。新年习俗定型于汉代。经过战国和秦朝末年的社会大动荡后,西汉初期推行“休养生息”政策,社会生产得到了恢复和发展,社会秩序比较稳定,人们的生活情趣高涨,一系列节日习俗形成了。《太初历》推行后,历法长期稳定,正月初一作为新年的日期也因此得到确立。这样一来,原来各地区分别在冬末春初不同日子举行的酬神、祭祀和庆祝活动便逐渐统一在农历正月初一这一天进行。随着社会的发展,从汉朝到南北朝,正月初一过新年的习俗愈演愈烈,燃爆竹,换桃符,饮屠苏酒,守岁卜岁,游乐赏灯等活动都已出现,新年成为我国第一大节日。新年习俗在唐代发生裂变。唐朝是思想文化昌明的时代,同时也是内外文化交流频繁的时代,新年习俗渐渐从祈祷、迷信、攘除的神秘气氛中解放出来,转变成娱乐型、礼仪型节日。元旦的爆竹不再是驱鬼辟邪的手段,而成了欢乐、喜庆的方式;庆祝新年的重点由祭神转向了娱人,转向了人们自己的娱乐游艺,享受生活。所以,可以说,也只有在唐代以后,新年才真正成为普天同庆,亿民欢度的“佳节良辰”。新年习俗到明清时期转型。这种转型主要表现在两个方面:一是礼仪性、应酬性加强。人们在新年相互拜谒,达官贵人互送名帖,或者登门叩拜;平民百姓也讲究“礼尚往来”,馈赠礼品,互相拜年。二是游艺性进一步加强。新年期间,玩狮子,舞龙,演戏,说书,高跷,旱船等各种娱乐活动五彩缤纷,绚丽夺目。北京人逛厂甸,广州人游花市,苏州人听寒山寺钟声,上海人游城隍庙……各地游艺活动自具特色,各种娱乐活动层出不穷,令人眼花缭乱。这时的新年习俗将中国传统文化完美地融合起来,成为集中展示我国几千年风俗文化的民俗博览会。两千多年的历史,中国的新年风俗盛行赤县神州,渗透到了每个人的生活之中,也铸造了每个炎黄子孙的灵魂。过大年,每到阴历年底赶回家与亲人团聚,祭祖宗,吃饺子,拜年,赏灯,这些已成为炎黄子孙共同的习惯。中华过年习俗还辐射到周边其他国家,如日本、越南、朝鲜、韩国等国家,他们与我们以相似的方式庆祝新年。对我有帮助下面是英语Traditions to bring good luck for the New Year are as old as the celebrations and come from all corners of the world. Many cultures count a tall, dark and handsome man crossing the threshold as a sign of good luck, but if the first person to enter the house is a red headed woman...the year is sure to be stressful. What single girl would argue with that one!Others involve housecleaning...brushing the bad luck of the past out with the dust. Holding a piece of silver or gold as the New Year begins is said to increase the chances of prosperity in the coming year...some place a silver coin over the doorway or a penny on the windowsill.An Irish tradition involves banging on the door and walls with Christmas bread to chase the bad luck out and bring good spirits to the household with the promise of bread enough in the New Year. This is probably related to the tradition of banging pots and pans in Iran, or the ancient tradition of using firecrackers to welcome in the Chinese New Year.The youngest boy in the household lighting a candle at dusk to burn through the night until morning light is another Celtic tradition that may be a citified version of lighting bonfires to keep away the evil spirits or a carryover of the Samhain tradition of lighting tapers in the windows to chase the evil spirits.In the Philippines children jump up and down at midnight to make sure they will grow tall. In Asia, sunrise celebrations and honoring of the ancestors and elders brings luck. German"s drop melted lead into cold water and take turns interpreting the results. This tradition has become so popular that kits are sold that include the lead pellets and suggestions for reading the results.Then there are the foods. Chiacchiere, honey drenched balls of dough ensure a sweet year in Italy. Grapes, one for each month, make for a lucky year in Spain and many Latin countries. Eating pork, all kinds of greens, cabbage, sauerkraut, the Southern U.S. tradition of black eyed peas or anything that forms a circle - such as donuts or pretzels - make for good fortune in the coming year. In Korea, bowing to the elders and deokguk, Rice Cake Soup, are part of the sun rise celebrations. The traditions are as varied as the lands where they are from, but they all involve sharing with friends and family and wishes for happiness, health and prosperity in the New Year...Ethnic New Year"s Recipes - Many New Year"s traditions are built around foods. In Korea, the US, Germany and throughout the world there are foods to bring luck, health and happiness in the coming year. This collection of international New Year recipes has pretzels, Hoppin" John with black-eyed peas, collard greens, Korean Rice Cake Soup (deokguk) and many more recipes for traditional foods for good fortune in the New Year...New Year"s Festivals Around the World - Tour the customs associated with the New Year alphabetically starting in Austria and ending in Vietnam. The foods for health and prosperity as well as traditional good luck symbols are explained...Irish Christmas and New Year Customs and Superstitions - The Celtic traditions and superstitions left over from the Druids form a basis for the traditions in Ireland. Much of the mythology of New Year"s comes from the ancient Samhain festivals...New Year"s Superstitions in Scotland and Wales - First footing, letting in the New Year and water traditions may ring a bell if your family heritage includes some Celtic roots. These beliefs were transported to other lands by immigrants and many have become common in other ethnic communities...比较乱的Let"s say that on December 20 you were to meet a friendly space alien. That is, let"s say that his space ship discreetly drops him off in your back yard while you are looking out your window. You walk outside to meet the visitor, and you find out he"s a pretty nice guy. His name is Gorg, he is wearing a costume that makes him look passably human, he speaks reasonable English, and he explains that his goal is to spend a week on the planet to learn about its people. He asks if you would consider being his guide for the week, and you decide to take on the job.So you take Gorg around and start showing him your town. Since it is December 20, one thing is for sure -- Gorg is going to ask about Christmas. And he is going to ask a LOT of questions, because Christmas is a pretty complicated tradition. Think about all the different questions Gorg might ask:圣诞节the name christmas is short for "christ"s mass". a mass is a kind of church service. christmas is a religious festival. it is the day we celebrate as the birthday of jesus. there are special christmas services in christian churches all over the world. but many of the festivities of christmas do not have anything to do with religion. exchanging gifts and sending christmas cards are the modern ways of celebrating the christmas in the world.the birth of jesus had a story: in nazareth, a city of galilee. the virgin"s name was mary was betrothed to joseph. before they came together, she was found with child of the holy spirit. joseph her husband was minded to put her away secretly. while he thought about these things, gabriel, an angel of the lord appeared to him in a dream and told him did not be afraid to take mary as wife. and mary will bring forth a son, and he shall call his name, jesus, for he will save his people from their sins.before jesus births, joseph and mary came to quirnius was governing syria. so all went to be registered, everyone to his own city. joseph also went up out of galilee, out of the city of nazareth, into judea, to the city of david, which is called bethlehem, because he was of the house and of the lineage of david, to be registered with mary, his betrothed wife, who was with child. so it was that while they were there, the days were completed for her to bedelivered. and she brought forth her firstborn son, and wrapped him in swaddling cloths, and laid him in a manger, because there was no room for them in the inn.and that, christmas is the feast of the nativity of jesus, is on 25th, december every year. but nobody know the actual birthday of jesus. and the christmas has become popular when christmas cards appeared in 1846 and the concept of a jolly santa claus was first made popular in nineteenth century.圣诞节Christmas is a Christian holiday that celebrates the birth of Jesus Christ. No one knows the exact date of Christ"s birth, but most Christians observe Christmas on December 25. On this day, many go to church, where they take part in special religious services. During the Christmas season, they also exchange gifts and decorate their homes with holly, mistletoe, and Christmas trees. The word Christmas comes from Cristes maesse, an early English phrase that means Mass of Christ. The story of Christmas comes chiefly from the Gospels of Saint Luke and Saint Matthew in the New Testament.The history of Christmas dates back over 4000 years. Many of our Christmas traditions were celebrated centuries before the Christ child was born. The 12 days of Christmas, the bright fires, the yule log, the giving of gifts, carnivals(parades) with floats, carolers who sing while going from house to house, the holiday feasts, and the church processions can all be traced back to the early Mesopotamians.“圣诞节”这个名称是“基督弥撒”的缩写。弥撒是教会的一种礼拜仪式。耶诞节是一个宗教节。我们把它当作耶稣的诞辰来庆祝,因而又名耶诞节。这一天,世界所有的基督教会都举行特别的礼拜仪式。但是有很多圣诞节的欢庆活动和宗教并无半点关联。交换礼物,寄圣诞卡,这都使圣诞节成为一个普天同庆的日子。圣诞节是基督教世界最大的节日。4世纪初,1月6日是罗马帝国东部各教会纪念耶稣降生和受洗的双重节日、称为“主显节”Epiphany,亦称“显现节”即上帝通过耶稣向世人显示自己。当时只有耶路撒冷的教会例外,那里只纪念耶稣的诞生而不纪念耶稣的受洗。Another important custom of Christmas is to send and receive Christmas cards, which are meant to help express the sentiment of the season. Americans begin sending Christmas cards early in December to friends,acquaintances, and co-workers. The post office advises customers to mail early in the season and avoid the Christmas rush. Some people heed the advice; others wait until the last minute and then are upset when their loved ones have not received the greeting card or the present which they sent.The Spring Festival is the most important festival in China.People usually decorate the doors and windows with red papercuts.becouse red means good luck.People usually clean house too.becouse they want to sweep away bad luck.Children can get some new clothes or presents from their parents and grandparents.On New Year"s Eve,family always have a big dinner.Everybody are watch TV and talk.In the midnight,there usually fairworks.On New Year"s Day,people usually put on their new clothes and visit their femily and friends.They usually say:"Happy New Year"s Day."The Spring Festival finishes at the Lantern Festival after two weeks.People usually eat a kind of rice dumpling called yuanxiao.It can take people good luck all the year round.春节The lunar calendar new year origin, has the basis, also is rich andpicks the varied fable to be possible to trace to several millenniumsbefore; Most is famous is "the year beast" fable. "The year beast" isa cruel terrible wild animal, ancient times the person believed "yearbeast" when lunar New Year"s Eve night can come out eats the person.The fable "the year beast" extremely fears red, the flame and quarrelsthe mixed sound, the people on paste the red paper in the gate, andselects the torch all night, is setting off the artillery candle,avoids "the year beast". To second day early morning, "hascongratulated" the sound to the ear, in the air does not fill theair is defeating "the year beast" the victory and the rebirth joy.中文版:农历新年的来源,有根据,且丰富而多采多姿的传说可追溯到几千年前;其中最有名的就是「年兽」的传说。「年兽」是一个残忍凶猛的野兽,古代人相信「年兽」在除夕夜时会出来吃人。传说「年兽」极惧怕红色、火光及吵杂的声音,人们就在门上贴著红纸条,并整夜点著火炬、燃放炮烛,来避开「年兽」。到了第二天一大早,「恭喜」之声不绝於耳,空气中弥漫著打败「年兽」胜利与重生的喜悦。
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expression 和 expressions 有什么区别?懂的人回答 谢谢

expression 和 expressionsexpression n. 表达,表示;表情;表现力;措辞expressions n. 表达式;表情;公式;表示式(expression是复数形式)
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