Grant argues that people should act like scientists, experimenting, considering all possible explanations and questioning earlier beliefs... 繼續閱讀

想問問左邊那個算式為什麼不用再×2 （丙丁分到的組別也有兩組可以選） 第一個2是指甲乙的選擇

68.將甲、乙、丙、丁、戊、己、庚、辛等八人隨機地分成兩組,每組四人,求甲乙不同組而丙丁 同組的機率為35 Scic C&C 2: xxx (xx

請問第四題的D、第五題🙏🏻

40 波的頻率與折射波的頻率相同。 太陽表面在2017年9月接連發生一起被稱作「太陽閃焰」的大型爆發,規模為10年來最大。科學家預計爆發所噴出 的帶電粒子團兩天後抵達地球,撞擊大氣層後產生電磁波,以致影響通訊品質。已知太陽與地球距離約為1.5x1011 公 C尺,光速約為3.0x108公尺/秒。下列敘述哪些正確? 0 (A)電磁波並無繞射與干涉的現象(B)電磁波在空間傳播須以帶電粒子為介質 1.5×103 500 3x68 (C) 電磁波具有隨時間作週期性變動的電場與磁場D 帶電粒子團脫離太陽時的速率約為8.7×105 公尺 / 秒 (E)帶電粒子團撞擊地球大氣層之後約8分鐘,地球上才能觀測到太陽閃焰影像。 折射線 我們常在生活中聽到2.4G無線這樣的名詞,根據美國聯邦通訊委員會(Federal Communications Commission)所定義, 2.4G是指在ISM 頻段中,2.4~2.4835 GHz之間的頻率,完整名稱為 Industrial Scientific Medical Band,是預留給工業、 ·科學及醫療使用的免費頻率,沒有任何使用上的限制。依本文所言,下列敘述哪些正確?(光速c=3x108m/s) (A) 2.4G 中的最長波長約為12.5cm (B)頻率愈大者,其傳播速度愈快 (C)波長愈長者,其傳播速度愈快 (D)只能在地球上傳播(E)可以在太空中使用。 甘零件油左直空中的波長約為300奈米,下列有關此電磁波的敘述,哪些正確? 去完的頻率約為1015 赫茲

請問該題的B選項要從文章中何處推斷 ？

master's degree in horticulture in 1896. In the same year, he was invited to head the newly formed department of agriculture at the Tuskegee Institute in Alabama, where he spent the rest of his life. At Tuskegee he slowly built up a laboratory and researched ways to rebuild the exhausted land around the Institute. Carver found that soil which had apparently been ruined by over-cultivation of cotton and tobacco could be restored and that growing peanuts and sweet potatoes also improved the soil. In order to popularize these crops, he developed over 300 by-products, including cereals, oils, dyes, soaps, and new foods. At the same time, he conducted his remarkable school on wheels, a traveling classroom from which he taught Alabama farmers the basics of soil enrichment. When he died on June 5, 1943, he was one of America's most honored scientists, having brought prosperity to large areas of the impoverished South. 9 Which of the following is an accurate statement about Carver's childhood? (A) He was adopted by a man named Carver. (B) His parents died when he was still very young. He was born into a rich farming family in Missouri. D) Despite his youth, he fought to free slaves in the Civil War. 10871

為什麼這題答案不是B？

20.螢火魷(學名: Watasenia scintillans),又名螢魷或螢烏賊,是一種非常小的魷魚,通 常有3英寸(7.6厘米)長。這種魷魚的每根觸鬚都有一個發光器產生螢光,進而引 誘黑暗水域中的獵物。由上文判斷,螢火魷主要生活在何種生態環境? (A)海洋 (B)溪流 (C)池塘 (D)河口 原核生物 21.圖(十一)是小明進行唾液對澱粉的影響實驗圖,靜置50分鐘後(使受質能被完全分 解),加入碘液測試,則下列何者的顯色配對完全正確? -PI-V 原核生物 唾液 丙日 AT - 燒杯 熱水(煮沸) 將兩支試管都加入澱粉液 甲 靜置 50分鐘 澱粉液 十唾液 澱粉液 +水 分別都加入碘液 (A) 將兩支試管都加入澱粉液 唾液 水陶瓷纖維網 靜置 丙 50分鐘 (六 澱粉液 +唾液 澱粉液 分別都加入碘液 A +水 B. 圖(十一) (A) C 選項 甲試管顏色 乙試管顏色 丙試管顏色 丁試管顏色 A() D (A) 黃褐 黃褐 黃褐 黃褐 (B) 黃褐 藍黑 黃褐 藍黑 (C) 黃褐 藍黑 藍黑 藍黑 (C) 4 S (D) 藍黑 藍黑 藍黑 藍黑 經 南 22. 圖(十二)為肺泡構造示意圖,甲、丁為血流方向, 乙、丙為氣體流向,請問下列敘述何者正確? (A)甲的血液是由右心室離開心臟流過來的 (B)乙會流向食道 甲 乙丙 G 啊

求解第七題為何用ing

S B Cute animal; she's also a symbol of hope for her endangered species. 6. A. truthful C. forgetful # B7. to DA A. to splash C. splashing 8. A. Similar with C. Aside from C9. A. bring an end to C. make the most of 10. A. wildlife A₁ C. privacy B. adorable 可愛的 D. portable 輕便的 B. splashed D. has splashed B. Instead of D. Thanks to 避難所 B. seek refuge in D. reduce the need for I 閱讀能力測驗:閱讀理解 B. border D. consumer H 18

求解第七題為何用ing

S B Cute animal; she's also a symbol of hope for her endangered species. 6. A. truthful C. forgetful # B7. to DA A. to splash C. splashing 8. A. Similar with C. Aside from C9. A. bring an end to C. make the most of 10. A. wildlife A₁ C. privacy B. adorable 可愛的 D. portable 輕便的 B. splashed D. has splashed B. Instead of D. Thanks to 避難所 B. seek refuge in D. reduce the need for I 閱讀能力測驗:閱讀理解 B. border D. consumer H 18

問第二題跟第四題！

B (A) She is having lunch. (B) She is trying on the shoes. (C) She is shopping for clothes. (D) She is talking on her cellphone. 2. John: You look unhappy. What happened? Billy: I don't know _. I have to take tests, make friends, play sports, and so on. There are so many things keeping me busy all the time. TA) how to do (C) how should I do (B) what to do (D) what should I do D AD 3. Let Her Go is Dan's (A) medium song. He listens to it every night before he goes to bed. (B) foreign (C) wrong (D) favorite 4. The bookstore on this street is having a sale until April 8. You can buy the books you are at a lower price. (A) interested in interest 5. Gina took an after-school (B) interesting to (D) interested course to make her speaking better. D (A) museum (C) science A (A) that (B) soccer (D) language A 6. I read in the newspaper Yo-Yo Ma is going to come back to Taiwan for the show ne month. His fans must be excited. **as (B) where (C) when 答学 ·三 (D) whether 電話: that man was following her home.

這題怎麼算？

②期林版(113學年度)第四章直線與回 pdf-Adobe Acrobat Reader (32-bit) 樓案(F) 編輯(E) 檢視(V) 簽署(S) 視窗(W) 說明(H) 首頁 工具 翰林版(113學年度) × ☆ 39 164 該檔案號稱符合PDF/A標準,且以唯讀模式開啟,以避免到修改。 210x297公園 115% ↓ 利用二元一次聯立不等式也可以表示平面上的封閉區域,進而求出面積值。 例: 設a為一實數,已知在第一象限滿足不等式(2x-y2a *{x+y≤6° 的所有點所形成之區域面積 33 為 平方單位,則a=? 2 x] 思 P 人 VewScile 00:04.15 啟用編輯 登入 牌

為什麼[A(org)]=n[An(org)]成立 (第三張圖equation 7.9) 感謝

Experiment 7 Experiment 7 The partition of Organic acid between Water and Organic solvent Objectives Understand the partition of a solute between two immiscible solvents. Introduction A chemical analysis that is performed primarily with the aid of volumetric glassware (e.g., pipets, burets, volumetric flasks) is called a volumetric analysis. For a volumetric analysis procedure, a known quantity or a carefully measured amount of one substance reacts with a to-be-determined amount of another substance with the reaction occurring in aqueous solution. The volumes of all solutions are carefully measured with volumetric glassware. The known amount of the substance for an analysis is generally measured and available in two ways: 1. As a primary standard: An accurate mass (and thus, moles) of a solid substance is measured on a balance, dissolved in water, and then reacted with the substance being analyzed. 2. As a standard solution: A measured number of moles of substance is present in a measured volume of solution - a solution of known concentration, generally expressed as the molar concentration (or molarity) of the substance. A measured volume of the standard solution then reacts with the substance being analyzed. The reaction of the known substance with the substance to be analyzed, occurring in aqueous solution, is generally conducted by a titration procedure. The titration procedure required a buret to dispense a liquid, called the titrant, into a flask containing the analyte. A reaction is complete when stoichiometric amounts of the reacting substances are combined. In a titration this is the stoichiometric point. In this experiment the stoichiometric point for the acid-base titration is detected using a phenolphthalein indicator. Phenolphthalein is colorless in an acidic solution but pink in a basic solution. The point in the titration at which the phenolphthalein changes color is called the endpoint of the indicator. Indicators are selected so that the stoichiometric point in the titration coincides (at approximately the same pH) with the endpoint of the indicator.