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問題的種類

生物 高中

想問第九題 為什麽「坐骨神經刺激腓腸肌收縮的神經傳遞物質」是乙醯膽鹼?

第6~10題為題組 歷史上有名的蛙神經實驗中,一定要提到賈法尼 脊椎管 (Luigi Aloisio Galvani)這位醫生。在 1780 年代,他發 現以手術刀碰觸蛙神經時,會使其連結的肌肉收縮。1791 年,他提出動物電(animal eletricity)的概念,他認為動物 電可以刺激神經與肌肉的運作,且本質上與閃電不同。他 的實驗也啟發科學家伏打(Alessandro Volta)發明伏打電池。 图: bro ABC 4A NaCl 6.5 某人為了研究神經訊號傳導和神經與肌肉突觸的訊號傳遞,模仿賈法尼將蛙的腦和脊髓破 壞,製作成坐骨神經與腓腸肌標本,示意如右圖。實驗過程中,需經常在標本上滴加林格氏 液,以保持標本活性,請依本文與所學知識回答下列問題:實驗探 【生活情境 105 全国获奖名 6.下表為林格氏液的成分百分比,哪些成分主要是用來維持體液酸鹼平衡 成分 NaHCO, 葡萄糖 含量 2.0 0.2 KC1 0.14 CaCl2 0.12 十 坐骨神經 NaH,PO4 0.01 股骨 腓腸肌 3hout in 7. 林格氏液中 Na /K 比例與蛙身體何種體液的Na+/K*比例最接近? (A)細胞質液 (B)汗液 (C)尿液 (D)組織液。 有關蛙的坐骨神經,下列哪些正確?(多選) (A)具有感覺神經纖維 (B)具有運動神經纖維 (C)細胞本體可在背根神經節找到 (D)細胞本體可在腹根神經節找到 (E)細胞本體在脊髓內,屬於中樞神經。 9. 圖中坐骨神經刺激腓腸肌收縮的神經傳遞物應為何?將刺激腓腸肌細胞何種離子通道開啟?

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英文 高中

請問28 29 怎麼判斷

he pír Ps A) in fF) represent Mount 21. (G) from or DAT III. 文意選填:20%(忽略選項大小寫) -- qooq icon dgodila usica I 291iqeni 1.9qon bos gailsad (C) attraction (D) monument (B) presented (E) tourister (H) at first (1) celebration un symbolizes Rushmore National Memorial is a well-known landmark in the United States. It is located the Black Hills of South Dakota. Looking down ing lo the top of the mountain are the faces of 22. the to four US presidents carved into the rock. The four presidents carved are George Washington, Thomas SUIVISI Jefferson, Theodore Roosevelt, and Abraham Lincoln, who are thought to 23. the most important presidents in US history. The giant sculpture Dom on 102 24. the history of the United States, from its birth to its DITO DIGO growth into a prosperous* nation. Olo 1981 odu no riotaid It was Doane Robinson, a historian, that 25. the idea of displaying the faces of respected 00 TOM MOT DIN V10091 mountainside. He wanted to create a popular 26. for his home state of South Dakota. 1961 OJODO 27., there was some disagreement over which historical figures should be featured. The idea of making the mountain a(n) 28.. of presidents came from Gutzon Borglum. Borglum was the sculptor 010 OTO VIBO VOUS WOOZ OO who would be in charge of the construction of the 29. *MS 001 Best DESS 0 qons MoU OMOS SUVODOM Borglum then managed the carving of the mountain from 1927 until 1941. 10 MOTO ONT btc odi to motiod od is noitqoo tortons bobbs bad aqoodT Today, Mount Rushmore is one of the United States' most popular 100 TOTA quorum PCT 30. spots. It hosts several million visitors each year. Vod go ODA year.bas "borba vlossimi meqal.chello jaguA di sengen bris 註: prosperous 繁榮的 on solo We od 21. anibros 22. 23. Juol znoge 25 Beao . Googt 27. Horn 28. 20 26. 工 ID 30. olt bo y no 2019 202 voltemod Togo Tong) @ Beildina obedimo smo moitqoo Energie TV 篇章結構:8% figures on s on the mountainsia On OCH is 24. Boy $ D 129.00

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自然 國中

各位 有沒有人可以幫助我🙏 看我錯的這幾題 用最上面的公式 感謝感謝🥰

1. 等加速度運動公式: 一切只疫反應。 ② V = Votat ② X= Volt hat (3) v= W 120K 2. 一位自行車選手在速度為20m/s時,以等減速度2m/s? 煞車,滑行100公尺後停下 來,則從煞車到停止共歷時多少秒? A{os 3. 物體由靜止以等加速度2m/s? 開始運動,經過若干秒後物體的速度為10 m/s? | 2 10=24 t=5 4. 某公車由靜止開始作等加速度運動,10秒後的速度為25公尺/秒,該車的加速度為 幾公尺/秒2 35 a 2.5 m/s² Im/s 5. 一物體由靜止作等加速度直線運動,最初2秒走了10m,若全部行程為250m,走完 全程尚需若干秒? 250 25=50s 8 6. 某個廠牌的歐規車,能在4秒內從靜止加速至100m/s,則此車子在4秒內的平均加 速度大小為多少m/s?? ( 100-0 4 4 = 25 m/s 7. 在筆直公路上以12公尺/秒速度行駛的車子,以-2公尺/秒的加速度煞車,第3 秒時的車速為何? A = 6 m/s 8. 一飛機自靜止加速至25 m/s,花費4秒鐘,若此飛機作等加速度運動,求該飛機經 過的距離為多少? 25+4=100 so 9. 一物體以2公尺/秒之速度滑進一粗糙的平面,經5秒鐘後即完全停止,若減速過 摩擦力一定,則言 體自滑進粗糙面到完全停止的滑行距離為多少公尺? Airom 5 10 假日時,段老師以初速20m/s 開車帶家人出去玩、如果他在行駛的過程中保持等加速 度 5m/s? 前進,則經過5秒後,車子總共前進了約多少公尺? 20 4.162.5m

已解決 回答數: 1
英文 高中

第四段第二行的pack是什麼意思? 解答寫「電池」但是我查不到pack有這個意思

第31至35 題為題組 Since the early 1990s, the hihilin zion battery has been the most suitable battery for portation to y 31 electronic equipment. Today, they're commonly used for cellphones, computers, tablets, digital cameras, and other devices. Lithium-ion batteries have nearly twice the energy density of traditional nicket cadmium batteries. 31 This feature has important implications for cellphones and computers, because it makes these items more portable for consumers. It also makes power tools easier to use and allows workers to use them for longer periods of time, 32. 32 Lithium-ion batteries retain retain mo naman of their power capacity from previous charging cycles. Thus they require no scheduled cycling and can be fully re-fueled to their maximum capacity during each charging cycle. Other rechargeable battery types, in contrast, retain information from previous charging cycles, which wastes valuable storage space. Over time, this makes these rechargeable batteries hold less of a charge. 33 It is fragile and requires a protection circuit to maintain safe operation. A high load could overheat the pack and safety might be jeopardized. 34 F After 2-3 years of use, the pack often becomes unserviceable due to a large voltage drop caused by high internal resistance. It should be noted, however, that manufacturers are constantly making improvements on lithium-ion batteries. 35 With such rapid progress, the use of lithium-ion batteries will certainly expand further. (A (A) The lithium-ion battery is also a low maintenance battery. (B) Despite its overall advantages, the lithium-ion battery has its drawbacks. (C) New and enhanced chemical combinations are introduced every six months or so. (D) Attempts to develop rechargeable lithium-ion batteries failed due to memory problems. (E) That is, they carry more power in a smaller unit, helping to reduce overall weight and size. d (F). Another downside is the increase of the internal resistance that occurs with cycling and aging. -3-

已解決 回答數: 1