向上移動1米距離所作的功為1焦耳。 1J=1w·s=1A·V·s，即1瓦的機械工作1秒的釋放的能量為1焦耳，3.6*10^6J=1kwh,即1度，是電的常用單位。 ? 擴展資料 J——轉(zhuǎn)動慣量 轉(zhuǎn)動慣量(Moment of Inertia)是剛體繞軸轉(zhuǎn)動時慣性（回轉(zhuǎn)物體保持其勻速圓周運動或靜止的特性）的量度，用字母I或J表示。 在經(jīng)典力學(xué)中，轉(zhuǎn)動慣量（又稱質(zhì)量慣性矩，簡稱慣距）通J是英語中的一個重要元音字母，但它的發(fā)音似乎比其他字母要稍微復(fù)雜一些。究竟復(fù)雜在哪里呢？一起來看看吧。 ? “j常以I 或J表示，SI 單位為 kg·m2。對于一個質(zhì)點，I = mr2，其中 m 是其質(zhì)量，r 是質(zhì)點和轉(zhuǎn)軸的垂直距離。 轉(zhuǎn)動慣量在旋轉(zhuǎn)動力學(xué)中的角色相當(dāng)于線性動力學(xué)中的質(zhì)量，可形式地理解為一個物體對于旋轉(zhuǎn)運動的慣性，用于建立角動量、角速度、力矩和角加速度等數(shù)個量之間的關(guān)系。 ? 以上是為大家介紹的j英文字母怎么發(fā)音的相關(guān)信息，希望對大家有一定的幫助。更多英語相關(guān)信息，可以關(guān)注滬江網(wǎng)查詢。 ? 特別提醒：如果您對英語學(xué)習(xí)感興趣，想要深入學(xué)習(xí)，可以了解滬江網(wǎng)校精品課程，量身定制高效實用的個性化學(xué)習(xí)方案，專屬督導(dǎo)全程伴學(xué)，掃一掃領(lǐng)200暢學(xué)卡。

準(zhǔn)是： 單果直徑22mm-24mm，標(biāo)識是L，即Large; 單果直徑24mm-26mm，標(biāo)識是 XL，即Extra Large; 單果直徑26-28mm俗稱“單鉤”，標(biāo)識是J，即Jumbo; 單果直徑28-30mm俗稱“雙鉤”，標(biāo)識為XJ\SJ\JJ，即Super Jumbo; 單果直徑30-32mm稱“3鉤”，標(biāo)識為G\P\XSJ\SXJ\XXJ\SSJ ，即Giant; 單果直徑32mm以上稱“4鉤”，標(biāo)識為XG\SG\XP\SP\XXXJ\XXSJ 。 此外，對車?yán)遄?span style="color: #fe6016">大規(guī)格級別的劃分還有另一種方式。 目前，美國和加拿大等北半球國家以“Row”(俗稱“行號”)為標(biāo)準(zhǔn)對車?yán)遄舆M(jìn)行分級。行號越小，車?yán)遄釉酱?車?yán)遄拥拇笮《嘣?號行和12號行之間變化。 除此之外，車?yán)遄雍竺婵赡苓€會跟一些其他字母，比如：JL、JR、JD，這些字母表示的就是不同的顏色。 L：light 淺色 R：red 紅色 D：dark 深色 最常見的就是JD，顏色比較深。 網(wǎng)絡(luò)英語培訓(xùn)班哪家好?不少人還在糾結(jié)這個問題，讓你真正能夠?qū)W到知識的才是好。如果您對英語學(xué)習(xí)感興趣，想要深入學(xué)習(xí)，可以了解滬江網(wǎng)校精品課程，量身定制高效實用的個性化學(xué)習(xí)方案，專屬督導(dǎo)全程伴學(xué)，掃一掃領(lǐng)200暢學(xué)卡。

對應(yīng)，由此可推斷，go under就是have problem/ difficulty之義。本題最具干擾性的是C，但文中并無細(xì)節(jié)具體說明即使入學(xué)人數(shù)滿額學(xué)校收人也很少的問題，因此C把problem定義得

全國大學(xué)英語四六級考試大綱明確給出了考試答題卡樣式，答題卡的填涂關(guān)系到考試成績，相信很多第一次參加四六級考試的小伙伴還沒有親眼見過它們的模樣，來目睹一下。 作文部分 作文題內(nèi)容印在試題冊背面，作答作文期間考生不得翻閱該試題冊。 聽力部分 聽力需要邊聽，邊大學(xué)英語四六級考試大做題，聽力錄音播放完畢后，考生應(yīng)停止作答，監(jiān)考員將回收答題卡1，考生得到監(jiān)考員指令后方可繼續(xù)作答。選擇題均為單選題，錯選、不選或多選將不得分。 閱讀部分 此答題卡的分值呈遞進(jìn)式增長，切記是答題卡2 26～35題為選詞填空，分?jǐn)?shù)占比為5% 36～45題為長篇閱讀，分?jǐn)?shù)占比為10% 46～55題為仔細(xì)閱讀，分?jǐn)?shù)占比為20% 翻譯部分 同作文

比較完整的理解，進(jìn)而能夠有效地預(yù)測短文的發(fā)展脈絡(luò)。 05 聽清問題，選擇答案 考生在看過選項和聽完短文以后往往會對將

2024年12月六級考試已結(jié)束，@滬江英語四六級 微信公眾號會在考后為大家第一時間發(fā)布2024年6月大學(xué)英語六級各板塊（聽力/閱讀/翻譯/作文）真題和答案解析，請大家關(guān)注。 ? 聽力原文 翻譯 作文 閱讀理解

2024年12月四級考試已結(jié)束，@滬江英語四六級 微信公眾號會在考后為大家第一時間發(fā)布2024年6月大學(xué)英語四級各板塊（聽力/閱讀/翻譯/作文）真題和答案解析，請大家關(guān)注。 ? 聽力原文 ? 翻譯 作文 閱讀理解

當(dāng)做筆記： 講座文章篇幅較長，信息含量大，同學(xué)們也要適當(dāng)做一些筆記，抓住上面所提到的提示詞前后的關(guān)鍵信息和關(guān)鍵詞匯即可，運用簡寫、符號等縮短筆記時間。 在每個選項后面標(biāo)注它指定的內(nèi)容，比如時間，地點，人名或相關(guān)事件。在明白每個選項所指后，最后看問題問什么就可以輕松的選出來。 不要為了記筆記而記！注意力要更多地用來理解！ 同學(xué)們考試加油！ ?屠皓民領(lǐng)銜 四六級通關(guān)神器? ??????基礎(chǔ)班·沖刺押題班·白金班 直播錄播相結(jié)合，基礎(chǔ)強化沖刺全包括 ??不同水平，靈活選擇班型 $課程限時優(yōu)惠6折起$ 【基礎(chǔ)班

出現(xiàn)的各種信號詞： 強調(diào)語氣 well.../I mean.../you know.../as you can see.../actually/basically .../So... 高

理了2024年12月英語四級閱讀理解模擬：泰國大象的生存危機，一起來看看吧。 2024年12月英語四級閱讀理解模擬：泰國大象的生存危機 For centuries, in the countries of south and Southeast Asia the elephant has been an intimate part of the culture, economy and religion, and nowhere more so than in Thailand. Unlike its African cousin, the Asian elephant is easily domesticated (馴化). The rare so-called white elephants have actually lent the authority of kingship to its rulers and until the 1920s the national flag was a white elephant on a red background.To the early Western visitors the country's romantic name was “Land of the White Elephant”. Today, however, the story is very different. Out of work and out of land, the Thai elephant struggles for survival in a nation that no longer needs it. The elephant has found itself more or less abandoned by previous owners who have moved on to a different economic world and a westernized society. And while the elephant's problems began many years ago, now it rates a very low national priority. How this reversal from national icon (圣像) to neglected animal came about is a tale of worsening environmental and the changing lives of the Thais themselves. According to Richard Lair, Thailand’s experts on the Asian elephant and author of the report Gone Astray, at the turn of the century there may well have beenas many as 100,000 domestic elephants in the country. In the north of Thailand alone it was estimated that more than 20,000 elephants were employed in transport, 1,000 of them alone on the road between the cities of Chiang Mai and Chiang Saen. This was at a time when 90 per cent of Thailand was still forest—a habitat (棲息地) that not only supported the animals but also made them necessary to carry goods and people. Nothing ploughs through dense forest better than a massive but sure-footed elephant. By 1950 the elephant population had dropped to a still substantial 13,397, but today there are probably nomore than 3,800, with another 1,350 roaming free in the national parks. But now, Thailand’s forest coversonly 20 per cent of the land. This deforestation (采伐森林) is the central point of the elephant's difficult situation, for it has effectively put the animals out of work. This century, as the road network grew, so the elephant's role as a beast of burden declined. 練習(xí)題： Choose correct answers to the question: 1. What can we know about African elephants from the passage? A. It is easy to tame them. B. It is hard to tame them. C. They are living a better life than Asian elephants. D. Their fate is quite similar to that of Asian elephants. 2. Thailand was once called “Land of the White Elephant” because_______. A. white elephant is rarely seen and thus very special B. white elephant was a national symbol until the 1920s C. white elephant has helped kings to gain the ruling authority D. this name was so romantic that it was popular among visitors 3. Why is the Thai elephant “out of work”, according to the author? A. Because the elephants are no longer useful to their owners. B. Because their owners are westernized and neglect them. C. Because the government pays little attention to the problem. D. Because there are too many elephants and too few jobs. 4. Which of the following statements is true about the elephant population at various times? A. There were 100,000 tamed elephants at the turn of the century. B. 20,000 elephants were employed in transport in Thailand at the turn of the century. C. By 1950 the elephant population in Thailand has been quite small. D. Today the elephant population is estimated at 5,150. 5. The passage is most probably from_______. A. a travel magazine B. a history book C. a research report D. an official announcement 參考答案： 1.[B] 事實細(xì)節(jié)題。本題考查對比處。根據(jù)文章第l段第3句：和非洲象不同，亞洲象容易馴養(yǎng)，言下之意就是：非洲象不易馴養(yǎng)。答案中用tame替代原文的domesticate，意思相同。選項A與原文意思正好相反;選項C，D原文根本未提到。 2.[B] 推理判斷題。根據(jù)文章第l段第4句中的“until the 1920s the national flag was a white elephant on a red background.”可知當(dāng)時白