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問題的種類

英文 高中

求解1的B

tion adv. 驚人地 47 From Japan to the World 2022 apan's most famous traditional food, sushi, has satisfied people's appetites around the world. We usually think of sushi as bite sized slices of raw fish laid who eat sushi love it. The sushi we eat today, however, is quite different from that many are unable to accept the thought of eating uncooked pieces of fish. But those on rice. Eaten as a snack or main course, sushi is light and healthy. At first sight, of the past. Long before the invention of refrigerators, in Japan, freshly-caught fish was preserved in salt and put in rice to keep it edible for a longer time. This process gave the fish a strong and sour flavor, and also kept it from rotting. After it was preserved, people ate the fish without the rice.com me novell Later, as methods of maintaining food improved, rice vinegar replaced the preservation process. And instead of throwing away the rice, the Japanese began eating it with the fish. Since the preservation process was no longer needed, sushi became quick and easy to prepare and eat. IW BDE As sushi's popularity exploded in Tokys across Japan, and around the globe, 15 a Japanese man named Yoshiaki Shiraishi who had problems running a small sushi shop by himself, invented kaiten sushi, or conveyor belt sushi. His first kaiten sushi restaurant opened in 1958 in Osaka, Japan, and quickly caught on. 5 10 In kaiten sushi restaurants, plates of sushi move around on a conveyor belt, and customers take whatever 20 catches their eye. This type of restaurant also makes it easier for those who don't speak Japanese to fully enjoy sushi. Through constant improvement, Japan has spread sushi, its gift to the world, all over the place. 139. 25

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地球科學 高中

第19題B選項誰可以解釋 會的助你學測滿級,給最佳解答

在 23 檢測的基本原理是光電效應 (E) 安檢門的兩側線圈皆會出現應電流 AC.S. 18.克卜勒分析第谷長年累積的行星觀測資料後,發現並提出行星運動定律。下列有關克 E DE B 卜勒行星運動定律的敘述,哪些正確?(應選3項) (A) 行星在離太陽較近處的運行速率會比離太陽較遠處快 牛頓的萬有引力定律啟發克卜勒提出行星運動第三定律 (C) 同一顆行星與太陽的連線,在相等時間內掃過的面積相等 (D) 繞太陽運轉的行星週期 T之平方與行星至太陽平均距離 R的比值皆相同 (E) 繞太陽運轉的行星週期 T之平方與行星至太陽平均距離 R 的立方之比值皆相同 泉州影 2020年6月21日下午日環食帶會經過臺灣,如圖(7)所 示,圖(7)中兩平行實線內的地區可見到難得的日環 食,而其他地區則是發生日偏食。下一次的環食帶再通 過臺灣本島,要等到195 年後的2215年6月。有關這次 發生的日環食,下列敘述哪些正確?(應選2項) T當天的陰曆日期是 15 日 金門縣會比嘉義市早發生日環食 臺北看到太陽盤面被月球遮住的面積,會比臺中市 所見到的大 (D) 嘉義市見到的日環食過程,月球會由太陽盤面的西 邊進入,從東側出 (E) 日環食發生時,月球會比發生日全食的月地距,更靠近地球 澎湖縣 > (D) 當波浪由較深的海域傳遞至較淺的海域時,其波速會補其 增高 新竹市 臺南市 高雄市 圖(7) 臺北 花蓮縣 車 20. 臺灣四周環海,海岸線長達 1000公里,各式海岸地形多變,深受海水運動影響,關於 海水的運動,下列敘述何者正確? 12020年6月21日下午發生日食,該日的前後二天適逢小潮 造成地球海水潮汐現象的主要動力來自於太陽的太陽風吹拂 (C) 臺灣海峽南端呈漏斗狀開口,寬約400公里,但中間寬不到 130公里,致黑潮主流 流經此處,俗稱黑水溝

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工程與科技 大學

各位大神 求解 拜託🙏🆘

CA 梁柱 一截面積是原來的兩倍 22. Two girders are made of the same material. Girder A is twice as long as girder B and Bo DE C B³ has a cross-sectional area that is twice as great. The ratio of the mass density of girder A to the mass density of girder B is: 質量密度 A) 4 B) 2 C) 1 D) 1/2 E) 1/4 29. During a short interval of time the speed v in m/s of an automobile is given by v=at² + bt³, where the time t is in seconds. The units of a and b are respectively: A) m-s²; m-s4 s³/m; s4/m dv=at+bt² B) C) m/s²; m/s³ D) m/s³; m/s4 E) m/s4; m/s5 34. The position y of a particle moving along the y axis depends on the time t according to the equation B) C) D) E) 質固定,体2倍 #%# 40. The coordinate of an object is given as a function of time by x = 7t-31², where x is in meters and t is in seconds. Its average velocity over the interval from t = 0 to t = 2 s is: A) 5 m/s X₂=0, X₁₂=14-12=2 B) -5 m/s 11 m/s C) D) -11 m/s (2-0)/2=1 E) -14.5 m/s 41. The coordinate of a particle in meters is given by x(t) = 16t-3.01³, where the time t is in seconds. The particle is momentarily at rest at t = A) 0.75 s A y = at -bt². The dimensions of the quantities a and b are respectively: A) L²/T, L³/T2 B) L/T², L²/T C) L/T, L/T² D) L³/T, T²/L E) none of these 1.3 s 5.3 s 7.3 s 9.3 s V(t) = 16-9+² =- [9t²-16) =-(3t+4) 13t-4) =+= 0.75 45. The velocity of an object is given as a function of time by v = 4t-312, where v is in m/s and t is in seconds. Its average velocity over the interval from t=0 to t=2 s: A) is 0 B) is -2 m/s C) is 2 m/s D) is -4 m/s E) cannot be calculated unless the initial position is given 49. A particle moves along the x axis according to the equation x = 61² where x is in meters and t is in seconds. Therefore: E B) C) D) E) A) the acceleration of the particle is 6 m/s² t cannot be negative the particle follows a parabolic path each second the velocity of the particle changes by 9.8 m/s none of the above

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英文 高中

想問大家 這兩段會怎麼用自己的話做英文摘要?

SCOBY [skobi]symbiotic culture of bacteria and yeast [simbiottk] [jist](細菌和酵母菌共生培養;紅茶菌) 的首字母縮寫,symbiotic 表示「(動植物)共生的」,yeast 指「酵母菌)」。 FRI 5 TE Track 25 Facts about Kombucha 關於康普茶你該知道的事 -Helen Yeh Toad.cn You may have come across kombucha on restaurant menus and wondered what it was. If you had tried it, you would have noticed it tastes like fizzy vinegar. Recently, it has exploded in popularity.' But what's so special about this drink? Kombucha begins its life as a mixture of tea and sugar. The secret ingredient² that turns this sweetened tea into kombucha 10 is a pancake-shaped blob called a SCOBY, which is short for symbiotic culture of bacteria and yeast. The SCOBY ferments* the tea by gradually converting the sugar into acids. vymy UVCI 2, Vuu years ago in China, where people drank it for its health-promoting benefits. As the story goes, a Korean doctor by the name of Kombu brought the tea from China 20 to Japan to cure an ailing emperor. From there, kombucha eventually made its way to Europe. While kombucha has been seen as a miracle cure for some diseases, there is no nedical evidence to support such claims. However, like other fermented products, combucha can aid in digestion and keep our gut healthy. And since it's lower in ugar than many sodas, it could also be a jood choice as a refreshing beverage. 翻譯請見第68頁

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自然科學 大學

想問3-9的a跟c

Problems 3-1. Explain the difference between *(a) random and systematic error. (b) constant and proportional error. *(c) absolute and relative error. (d) mean and median. *3-2. Suggest two sources of systematic error and two sources of random error in measuring the length of a 3-m table with a 1-m metal rule. 3-3. Name three types of systematic errors. *3-4. Describe at least three systematic errors that might occur while weighing a solid on an analytical balance. *3-5. Describe at least three ways in which a systematic error might occur while using a pipet to transfer a known volume of liquid. 3-6. Describe how systematic method errors may be detected. *3-7. What kind of systematic errors are detected by varying the sample size? 3-8. A method of analysis yields masses of gold that are low by 0.4 mg. Calculate the percent relative error caused by this result if the mass of gold in the sample is (a) 500 mg. (b) 250 mg. V(c) 125 mg. (d) 60 mg. 3-9. The method described in Problem 3-8 is to be used for the analysis of ores that assay about 1.2% gold. What minimum sample mass should be taken if the relative érror resulting from a 0.4-mg loss is not to exceed *(a) -0.1%? (b) -0.4%? (c) -0.8%? (d) - 1.1%? 3-10. The color change of a chemical indicator requires an overtitration of 0.03 mL. Calculate the error if the total volume of titrant is percent relative (a) 50.00 mL. (c) 25.0 mL. 3-11. A loss of 0.4 mg of Zn occurs in the course of an percent relative analysis for that element. Calculate the error due to this loss if the mass of Zn in the sample is *(b) 10.0 mL. (d) 30.0 mL. 190 (c) 188 (d) 4.52 x 103 4.63 x 103 4.53 x 10 ³ √6 *(a) 30 mg. (b) 100 mg. *(c) 300 mg. (d) 500 mg. 3-12. Find the mean and median of each of the following sets of data. Determine the deviation from the mean for each data point within the sets, and find the mean devi- Vation for each set. Use a spreadsheet if it is convenient. *(a) 0.0110 0.0105 (b) 24.53 0.0104 24.68 24.81 24.77 39.61 862 (f) 850 MA 3-13. Challenge Problem: Richards and W the molar mass of lithium and colle data. 24.73 Experiment 1 2 3 4 5 6 194 447 X 10 7 448 X 107 4.58 X 10 (a) Find the mean molar t workers. (b) Find the median molar ma (c) Assuming that the cam molar mass of lithium is the absolute ertor and of the mean value demi Willard. (d) Find in the chemical ues for the molar mus since 1910, and ag a table or spreadshera 1817 given in the a Richards and Willd. Com mass versus year to la of lithium has chang Suggest possible abruptly about 18 ant de (e) The incredibly deals Richards and W that major changes will occur. Disc calculation in pat (f) What factors ha since 1910? (g) How would you mass? 6See Chapter 2 of Applications of Microsoft Excel in Analytical Chemistry, 4th ed., for information about statistical 7T. W. Richards and H. H. Willard, J. Am. Chem. Soc., 1910, 32, 4, DOI: 10.1021/ja01919a002. built-in statistical functions. "Answers are provided at the end of the book for questions and problems marked with an asterisk The I of ₂ or inc rce of able vas error c often in individu ate resul data in rtainties. dimensio andom e analysts The result

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